Site News
Warning: This wiki containsspoilers. Read at your own risk!

Social media: If you would like, please joinour Discord server, and/or follow us onX (Twitter),Bluesky, orTumblr!

Bonus Doubler

From Fire Emblem Wiki, your source on Fire Emblem information. By fans, for fans.

Namespaces

More

  • More
(Redirected fromBonus Doubler 3)
Bonus Doubler


Icon of the Bonus Doubler 1 skill inHeroes.

Type(s)

Passive (Type A)

First game

Heroes

Bonus Doubler (Japanese:強化増幅Enhancement Amp) is a three-tiered passive type Askill which debuted inFire Emblem Heroes; the individual tiers of the skill areBonus Doubler 1,Bonus Doubler 2, andBonus Doubler 3 in order from lowest to highest. Doubler multiplies any bonuses currently in place on its user whenever they are in combat; the multiplication factor increases with the skill's tier.

Data

GameIconTypeEffectSP costPrerequisitesUsable byInheritableOther effects and notes
Heroes
(Bonus Doubler 1)		AGrants +⁠(current bonus on stat × 50%; calculated independently) each toattack,speed,defense, andresistance to user during combat.60--Infantry✓--
Heroes
(Bonus Doubler 2)		AGrants +⁠(current bonus on stat × 75%; calculated independently) each toattack,speed,defense, andresistance to user during combat.120Bonus Doubler 1Infantry✓--
Heroes
(Bonus Doubler 3)		AGrants +⁠(current bonus on stat; calculated independently) each toattack,speed,defense, andresistance to user during combat.240Bonus Doubler 2Infantry✓--
Heroes
(Bonus Doubler 4)		AIf bonus is active on user or ally within 2 spaces of user, grants +⁠(4 + highest bonus on stat between user and allies within 2 spaces of user; calculated independently) each toattack,speed,defense, andresistance to user during combat.300Bonus Doubler 3Infantry✓--

Availability

Heroes

MethodData
Bonus Doubler 1Bonus Doubler 2Bonus Doubler 3Bonus Doubler 4
Unit (★★★)Dagdar: Reformed Bandit———
Unit (★★★★)Alcryst: Tender Groom •Caspar: Summer IntensityAlcryst: Tender Groom •Caspar: Summer Intensity •Dagdar: Reformed BanditCaspar: Summer Intensity—
Unit (★★★★★)Alm: Lovebird Duo •Lyon: Demon King •Mozu: Tragic Start •Nah: Little Miss •Roy: Blazing Lion •Timerra: Trick or MeatAlm: Lovebird Duo •Lyon: Demon King •Mozu: Tragic Start •Nah: Little Miss •Roy: Blazing Lion •Timerra: Trick or MeatAlcryst: Tender Groom •Alm: Lovebird Duo •Dagdar: Reformed Bandit •Lyon: Demon King •Mozu: Tragic Start •Nah: Little Miss •Roy: Blazing Lion •Timerra: Trick or MeatMozu: Tragic Start •Timerra: Trick or Meat
Tempest TrialsLife & Death 1: 20,000 points———
Sacred Seal Forge100Verdant Badge, 20Great Verdant Badge, 40Sacred Coin200Verdant Badge, 60Great Verdant Badge, 50Sacred Coin,Bonus Doubler 1 seal1,000Verdant Badge, 400Great Verdant Badge, 100Sacred Coin,Bonus Doubler 2 seal—

Flavor text

GameText
(English)		Text
(Japanese)
Heroes
(Bonus Doubler 1)
Grants bonus to Atk/Spd/Def/Res during
combat = 50% of current bonus on each of
unit's stats. Calculates each stat bonus
independently.
戦闘中、攻撃、速さ、守備、魔防が
自分が受けている攻撃、速さ、守備、魔防の
強化の値の５０％だけ上昇（能力値ごとに計算）
Heroes
(Bonus Doubler 2)
Grants bonus to Atk/Spd/Def/Res during
combat = 75% of current bonus on each of
unit's stats. Calculates each stat bonus
independently.
戦闘中、攻撃、速さ、守備、魔防が
自分が受けている攻撃、速さ、守備、魔防の
強化の値の７５％だけ上昇（能力値ごとに計算）
Heroes
(Bonus Doubler 3)
Grants bonus to Atk/Spd/Def/Res during
combat = current bonus on each of unit's stats.
Calculates each stat bonus independently.
戦闘中、攻撃、速さ、守備、魔防が
自分が受けている攻撃、速さ、守備、魔防の
強化の値だけ上昇（能力値ごとに計算）
Heroes
(Bonus Doubler 4)
If【Bonus】is active on unit or
an ally within 2 spaces of unit, grants
Atk/Spd/Def/Res+X to unit during combat
(X = 4 + highest bonus on each stat between
unit and allies within 2 spaces of unit;
calculates each stat bonus independently).

【Bonus】
All effects that last "for 1 turn" or "that turn
only." Includes bonuses granted by a skill
like Rally or Hone and positive status effects
(extra movement or effects like Dominance).
自分か周囲２マス以内の味方が
【有利な状態】を受けている時、
戦闘中、攻撃、速さ、守備、魔防＋４
さらに、攻撃、速さ、守備、魔防が、
自分と周囲２マス以内にいる味方のうち
強化が最も高い値だけ上昇（能力値ごとに計算）

【有利な状態】
「１ターン」の効果全般
（強化、移動＋１、敵弱化ダメージ＋等）

Etymology and other languages

Names, etymology, and in other regions
LanguageNameDefinition, etymology, and notes
English

Bonus Doubler

--

Japanese

強化増幅

Enhancement Amp

Spanish

Bonificación doble

Double bonus; abbreviated asBonific. doble.

French

Amplification

Amplification

German

Bonus-Doppler

Bonus-Doubler

Italian

Aumento bonus

Bonus increase

Portuguese

Dobra bônus

Doubles bonus

Traditional Chinese

強化增幅

Intense amplification

Type A passive skills inHeroes
Aether Raids skillsAR-D Atk/Def •AR-D Atk/Res •AR-D Atk/Spd •AR-D Def/Res •AR-D Spd/Def •AR-D Spd/Res •AR-O Atk/Def •AR-O Atk/Spd •AR-O Spd/Res
Bonus damage skillsAshera's Chosen •Dragonhide •Dragonscale •Dragonskin •Dragoon Pillar •Dragoon Shield •Grani's Shield •Iote's Shield •Svalinn Shield
Counter-attack skillsClose Counter •Close Foil •Close Reversal •Close Salvo •Close Ward •Distant A/D Form •D Bonus Amp •Distant Counter •Distant Dart •Distant Ferocity •Distant Foil •Distant Pressure •Distant Reversal •Distant Stance •Distant Storm •Distant Ward •Emblems' Miracle •Ostian Backbone •Ostian Counter •Ostia's Heart •Realms United
Proximity skillsAshera's Chosen •Atk/Def Bond •Atk/Def Finish •Atk/Def Form •Atk/Def Fortune •Atk/Def Scowl •Atk/Def Solo •Atk/Def Unity •Atk/Def Wild •Atk/Res Aria •Atk/Res Bond •Atk/Res Finish •Atk/Res Form •Atk/Res Fortune •Atk/Res Scowl •Atk/Res Solo •Atk/Res Tidings •Atk/Res Unity •Atk/Spd Aria •Atk/Spd Bond •Atk/Spd Finish •Atk/Spd Form •Atk/Spd Fortune •Atk/Spd Hexblade •Atk/Spd Hexedge •Atk/Spd Scowl •Atk/Spd Solo •Atk/Spd Tidings •Atk/Spd Unity •Atk/Spd Waylay •Atk/Spd Wild •Def/Res Aria •Def/Res Bond •Def/Res Finish •Def/Res Form •Def/Res Fortune •Def/Res Scowl •Def/Res Solo •Def/Res Unity •Distant A/S Solo •Distant D/R Solo •Laws of Sacae •Power of Nihility •Sorcery Blade •Spd/Def Bond •Spd/Def Finish •Spd/Def Form •Spd/Def Solo •Spd/Def Unity •Spd/Res Bond •Spd/Res Finish •Spd/Res Form •Spd/Res Hexblade •Spd/Res Scowl •Spd/Res Solo •Sway Atk/Res •Sway Atk/Spd
Stat-boosting skillsAttack + •Attack/Def + •Atk/Def Catch •Atk/Def Clash •Atk/Def Excel •Atk/Def Ideal •Atk/Def Prime •Atk/Def Push •Attack/Res •Atk/Res Catch •Atk/Res Ideal •Atk/Res Mastery •Atk/Res Push •Atk/Spd •Atk/Spd Airspace •Atk/Spd Catch •Atk/Spd Clash •Atk/Spd Excel •Atk/Spd Hexblade •Atk/Spd Ideal •Atk/Spd Mastery •Atk/Spd Prime •Atk/Spd Push •Beyond Witchery •B Duel Cavalry •B Duel Flying •B Duel Infantry •Blue Skies •Blue-Sky Gust •Bonus Doubler •Brazen Atk/Def •Brazen Atk/Res •Brazen Atk/Spd •Brazen Def/Res •Brazen Spd/Def •Brazen Spd/Res •C Bonus Doubler •C Duel Cavalry •C Duel Flying •C Duel Infantry •Crystalline Water •Defense + •Def/Res Catch •Def/Res Ideal •Def/Res •Defiant Atk •Defiant Def •Defiant Res •Defiant Spd •Deluge Boost •Diluvial Boost •D Bonus Doubler •Distant Pressure •Dragoon Shield •Duality •Earth Boost •Earthfire Boost •Earthwind Boost •Fell Wyrmscale •Fire Boost •Fireflood Boost •Firestorm Boost •Fortifications •Fortress Def •Fort. Def/Res •Fortress Res •Fury •G Duel Cavalry •G Duel Flying •G Duel Infantry •HP + •HP/Atk •HP/Def •HP/Res •HP/Spd •Knightly Devotion •Life and Death •Obsession •Obsidian Tactics •Part of the Plan •Peerless Beauty •Perfect Atk/Spd •Primordial Boost •Rare Talent •R Duel Cavalry •R Duel Flying •R Duel Infantry •Resistance + •Scendscale •Self-Improver •Self-Mastery •Shatterproof •Solid Ground •Speed + •Spd/Def •Spd/Def Catch •Spd/Def Clash •Spd/Def Ideal •Spd/Def Prime •Spd/Res •Spd/Res Catch •Spd/Res Hexblade •Spd/Res Ideal •Still Water •Stronghold •Superior Talent •Swift Slice •Swift Specter •Thunder's Fist •Torrential Boost •Trample •Triangle Adept •Tunnel Vision •Verdict of Sacae •Verge of Death •Water Boost •Wind Boost
Turn-related skillsArmored Blow •Beyond Reason •Blade Session •Bond Breaker •Bracing Blow •Bracing Stance •Close Def •Close Foil •Close Reversal •Close Ward •Darting Blow •Darting Breath •Darting Stance •Death Blow •Distant Def •Distant Foil •Distant Ward •Dragonskin •Duelist's Blow •Fierce Breath •Fierce Stance •Flared Mirror •Flared Sparrow •Flash Sparrow •Gift of Magic •Kestrel Stance •Laws of Sacae •Mastermind •Mirror Impact •Mirror Stance •Mirror Strike •Nightmare •Remote Mirror •Remote Sparrow •Remote Sturdy •Shield Session •Sly Mirror •Sly Sturdy Blow •Sly Swift Sparrow •Steady Blow •Steady Breath •Steady Impact •Steady Posture •Steady Stance •Strat Flame •Sturdy Blow •Sturdy Flare •Sturdy Impact •Sturdy Stance •Sturdy Surge •Surge Sparrow •Swift Sparrow •Swift Stance •Swift Strike •Warding Blow •Warding Breath •Warding Stance •Warrior's Blow
Miscellaneous skillsAlready Dead •Divine Toxin •Flashing Blade •Gift of Guidance •Gray Illusion •Heaven's Stead •Heaven's Stead N •Heavy Blade •Lady Knight •Leaden Regrets •Mila's Turnwheel •New Opening •Nihility's Undoing •Ninja-Zap •Oath of Ostia •Prof's Guidance •Protective •Rapid Slice •Refined Magic •Reject Tyranny •Sacae's Decree •Swift Ice •Trained to Kill •True Genius •Unfledged God
Sacred Seal skills inHeroes
Debuffing skillsAtk Feint •Atk Ploy •Atk Smoke •Atk/Spd Snag •Chill Atk •Chill Atk/Def •Chill Atk/Res •Chill Atk/Spd •Chill Def •Chill Def/Res •Chill Res •Chill Spd •Chill Spd/Def •Chill Spd/Res •Def Feint •Def Ploy •Def/Res Snag •Dull Close •Guard •Lull Atk/Res •Panic Ploy •Pegasus Flight •Res Feint •Res Ploy •Seal Atk •Seal Spd •Spd/Def Tempo •Spd Feint •Spd Ploy •Spd/Res Snag •Spd/Res Tempo •Spd Smoke •Wyvern Flight
Follow-up strike skillsBold Fighter •Brash Assault •Deflect Magic •Deflect Melee •Deflect Missile •Dive-Bomb •Null Follow-Up •Potent •Quick Riposte •Slick Fighter •Special Fighter •Wily Fighter
Healing skillsBreath of Life •Flow Refresh •Live to Serve •Mystic Boost •Renewal
Mobility skillsAerobatics •Air Orders •Armor March •Armored Boots •Assault Troop •Even Tempest •Flier Formation •Flier Guidance •Ground Orders •Guidance •Obstruct •Odd Tempest
Proximity skillsArmor March •Atk Smoke •Atk Tactic •Atk/Def Bond •Atk/Def Finish •Atk/Def Form •Atk/Def Oath •Atk/Def Solo •Atk/Res Bond •Atk/Res Form •Atk/Res Finish •Atk/Res Oath •Atk/Res Rein •Atk/Res Solo •Atk/Spd Bond •Atk/Spd Finish •Atk/Spd Form •Atk/Spd Oath •Atk/Spd Rein •Atk/Spd Solo •Breath of Life •Close Guard •Close Transcend •Def Tactic •Def/Res Bond •Def/Res Finish •Def/Res Form •Def/Res Oath •Def/Res Solo •Dist. Counter (D) •Dist. Counter (M) •Distant Guard •Drive Atk •Drive Def •Drive Res •Drive Spd •Fortify Beasts •Fortify Dragons •Goad Beasts •Goad Dragons •Hone Atk •Hone Beasts •Hone Dragons •Hone Spd •Inf. Hexblade •Inf. Null Follow •Infantry Rush •Panic Smoke •Res Tactic •Rouse Atk/Def •Rouse Atk/Spd •Rouse Def/Res •Rouse Spd/Def •Rouse Spd/Res •Savage Blow •Sorcery Blade •Spd Tactic •Spd Smoke •Spd/Def Bond •Spd/Def Finish •Spd/Def Form •Spd/Def Rein •Spd/Def Solo •Spd/Res Bond •Spd/Res Finish •Spd/Res Form •Spd/Res Oath •Spd/Res Rein •Spd/Res Solo •Spur Atk •Spur Atk/Def •Spur Atk/Res •Spur Atk/Spd •Spur Def •Spur Def/Res •Spur Res •Spur Spd •Spur Spd/Def •Spur Spd/Res •Threaten Atk •Threat. Atk/Def •Threat. Atk/Res •Threaten Def •Threat. Def/Res •Threaten Res •Threaten Spd •Threat. Spd/Def •Threat. Spd/Res •Ward Beasts •Ward Dragons
Squad Ace skillsSquad Ace A •Squad Ace B •Squad Ace C •Squad Ace D •Squad Ace E •Squad Ace F •Squad Ace G •Squad Ace H •Squad Ace I •Squad Ace J •Squad Ace K •Squad Ace L •Squad Ace M •Squad Ace N •Squad Ace O •Squad Ace P •Squad Ace Q •Squad Ace R •Squad Ace S •Squad Ace T •Squad Ace U •Squad Ace V •Squad Ace W •Squad Ace X •Squad Ace Y •Squad Ace Z •Squad Ace AA •Squad Ace AB •Squad Ace AC •Squad Ace AD •Squad Ace AE •Squad Ace AF •Squad Ace AG •Squad Ace AH •Squad Ace AI •Squad Ace AJ •Squad Ace AK •Squad Ace AL •Squad Ace AM •Squad Ace AN •Squad Ace AO •Squad Ace AP •Squad Ace AQ •Squad Ace AR •Squad Ace AS •Squad Ace AT •Squad Ace AU •Squad Ace AV •Squad Ace AW •Squad Ace AX •Squad Ace AY •Squad Ace AZ •Squad Ace BA •Squad Ace BB •Squad Ace BC •Squad Ace BD •Squad Ace BE •Squad Ace BF •Squad Ace BG •Squad Ace BH •Squad Ace BI •Squad Ace BJ •Squad Ace BK •Squad Ace BL •Squad Ace BM •Squad Ace BN •Squad Ace BO •Squad Ace BP •Squad Ace BQ •Squad Ace BR •Squad Ace BS •Squad Ace BT •Squad Ace BU •Squad Ace BV •Squad Ace BW •Squad Ace BX •Squad Ace BY •Squad Ace BZ •Squad Ace CA •Squad Ace CB •Squad Ace CC •Squad Ace CD •Squad Ace CE •Squad Ace CF •Squad Ace CG •Squad Ace CH •Squad Ace CI •Squad Ace CJ •Squad Ace CK •Squad Ace CL •Squad Ace CM •Squad Ace CN •Squad Ace CO •Squad Ace CP •Squad Ace CQ •Squad Ace CR •Squad Ace CS •Squad Ace CT •Squad Ace CU •Squad Ace CV •Squad Ace CW •Squad Ace CX •Squad Ace CY
Stat-boosting skillsAttack + •Attack/Def + •Atk/Def Catch •Atk/Def Clash •Atk/Def Ideal •Atk/Def Link •Atk/Def Prime •Atk/Def Push •Attack/Res •Atk/Res Catch •Atk/Res Ideal •Atk/Res Push •Atk/Spd •Atk/Spd Catch •Atk/Spd Clash •Atk/Spd Ideal •Atk Opening •Atk/Spd Prime •Atk/Spd Push •Blaze Dance •Blue Skies •Bonus Doubler •Brazen Atk/Def •Brazen Atk/Res •Brazen Atk/Spd •Brazen Def/Res •Brazen Spd/Def •Brazen Spd/Res •Defense + •Def Opening •Def/Res •Def/Res Catch •Def/Res Ideal •Defiant Atk •Defiant Def •Defiant Spd •Earth Boost •Earth Dance •Fire Boost •Fortify Def •Fortify Res •Fortress Def •Fort. Def/Res •Fortress Res •Fury •Gale Dance •HP + •HP/Atk •HP/Def •HP/Res •HP/Spd •Initiate Seal Atk •Initiate Seal Def •Initiate Seal HP •Initiate Seal Res •Initiate Seal Spd •Life and Death •Resistance + •Res Opening •Solid Ground •Speed + •Spd Opening •Spd/Def •Spd/Def Catch •Spd/Def Clash •Spd/Def Ideal •Spd/Def Oath •Spd/Def Prime •Spd/Res Catch •Spd/Res Ideal •Spd/Res •Still Water •Torrent Dance •Water Boost •Wind Boost •Wrath
Turn-related skillsArmored Blow •Blade Session •Bracing Blow •Bracing Stance •Breath of Life •Close Def •Darting Blow •Darting Breath •Darting Stance •Death Blow •Desperation •Distant Def •Even Atk Wave •Even Def Wave •Even Res Wave •Even Spd Wave •Fierce Breath •Fierce Stance •Kestrel Stance •Mirror Strike •Mirror Stance •Odd Atk Wave •Odd Def Wave •Odd Res Wave •Odd Spd Wave •Poison Strike •Quick Riposte •Savage Blow •Shield Session •Steady Blow •Steady Breath •Steady Posture •Steady Stance •Sturdy Blow •Sturdy Stance •Swift Sparrow •Swift Stance •Swift Strike •Warding Blow •Warding Breath •Warding Stance
Miscellaneous skillsBeast •Counter Roar •Dragon's Wrath •Flashing Blade •Hardy Bearing •Heavy Blade •Iote's Shield •Phantom Res •Phantom Spd •Quickened Pulse •Time's Pulse •Wrathful Staff
Enemy-exclusive skillsBlade Seal •B Time Traveler •Boots Seal •Charm Seal •C Time Traveler •Dazzling Staff •Gold Perfection •G Time Traveler •Elixir Seal •Embla's Ward •Guardian Seal •Gullinbursti •Horn Seal •Múspellflame •Niðavellir Axiom •Nine-Realm Pact •R Time Traveler •Røkkr •Veil Seal