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Heartfire Hero
CREATURE — MOUSE SOLDIER

Heartfire Hero

Valiant — Whenever this creature becomes the target of a spell or ability you control for the first time each turn, put a +1/+1 counter on it. When this creature dies, it deals damage equal to its power to each opponent.
CMC
1
Set
BLB
Rarity
uncommon
Price
$0.30
FORMATS
CommanderLEGAL
Brawl (Historic)NOT LEGAL
DraftNOT LEGAL
StandardBANNED
ModernLEGAL
PioneerBANNED
REMINDER TEXT · 1
  • WOTC Official Reminder Textofficial rules
    Valiant — This ability triggers whenever this creature becomes the target of a spell or ability you control.
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  • WWizards of the Coast2024-07-26
    Official Ruling
    Use Heartfire Hero's power as it last existed on the battlefield to determine how much damage it deals due to its last ability.
  • WWizards of the Coast2024-07-26
    Official Ruling
    If a spell or ability you control has one or more of its targets changed to a creature you control with a valiant ability, that ability will trigger if that creature hasn't yet been the target of a spell or ability you control this turn.
  • WWizards of the Coast2024-07-26
    Official Ruling
    If you create a copy of a spell on the stack and target a creature you control with a valiant ability, that ability will trigger as long as the creature hasn't yet been the target of a spell or ability you control this turn.
  • WWizards of the Coast2024-07-26
    Official Ruling
    Valiant abilities will resolve before the spell or ability that caused them to trigger.

Rulings via Scryfall

COMMENTS · 2
  • WO
    Heartfire Hero was banned in pioneer on November 10, 2025. Overall, our goal with this ban is to reduce the win rate of Mono-Red, specifically by targeting the degree of pressure to have interaction on the first turn (or risk dying on the third turn) that Heartfire Hero puts on the format. Pioneer is deep enough that we believe Mono-Red Aggro should be able to comfortably adapt, and lessening the inevitability that comes with its early pressure will broaden what its players can explore. Source: https://magic.wizards.com/en/news/announcements/banned-and-restricted-november-10-2025
  • WO
    Heartfire Hero was banned in standard on June 30, 2025. Heartfire Hero has been another key piece of red aggressive decks' strength throughout the last year of Standard. Its strength has shifted the format toward decks that can interact starting on turn one or two or decks that can leverage Temporary Lockdown as powerful counterplay. Heartfire Hero has proven to have too much explosive power combined with too much resiliency. As such, Heartfire Hero is banned. Source: https://magic.wizards.com/en/news/announcements/banned-and-restricted-june-30-2025