Act of Heroism
Act of Heroism: Instant, Masters 25. Untap target creature. It gets +2/+2 until end of turn and can block an additional creature this turn. On Mana Grove.
- Mana cost
- {1}{W}
- Mana value
- 2
- Type
- Instant
- Colour identity
- White (W)
- Rarity
- Common
- Set
- Masters 25 (A25)
- Released
- 2018-03-16
- Collector number
- 1
- Artist
- Magali Villeneuve
- Commander rank
- 17,249 (by how often it appears in Commander decks)
Build around this card with Grover
About Act of Heroism
Act of Heroism is a Magic: The Gathering card, a common white instant from Masters 25 (A25), a Masters set released in March 2018. It is collector number 1 in that set, with art by Magali Villeneuve. It costs {1}{W} (one generic and one white mana) to cast, for a mana value of 2. Its colour identity is white. It is legal in Pioneer, Modern, Legacy, Vintage, Pauper, Commander, Duel Commander, Oathbreaker, Pauper Commander and Penny Dreadful. It has been printed in 2 sets, from Hour of Devastation (2017) to Masters 25 (2018). The latest aggregated market price for this printing is $0.15 (normal finish, as of 2026-11-01).
Card text
Untap target creature. It gets +2/+2 until end of turn and can block an additional creature this turn.
"On every plane, there are those who run toward danger." -Gideon Jura
Market price
Latest aggregated market price for the normal finish of this printing: $0.15 (as of 2026-11-01).
The figure covers this printing only; other printings carry their own price on their own page.
Format legality
Legality of Act of Heroism by format. Formats in which it is not legal are not listed.
| Pioneer | Legal |
|---|---|
| Modern | Legal |
| Legacy | Legal |
| Vintage | Legal |
| Pauper | Legal |
| Commander | Legal |
| Duel Commander | Legal |
| Oathbreaker | Legal |
| Pauper Commander | Legal |
| Penny Dreadful | Legal |
Other printings of Act of Heroism
Act of Heroism has been printed in 2 sets. The other printings are listed newest first, with the rarity and release year of each.
| Printing | Rarity | Year |
|---|---|---|
| Hour of Devastation (HOU) #1 | Common | 2017 |
Official rulings
Four official rulings apply to Act of Heroism, newest first.
- Act of Heroism can target an untapped creature. It still gets +2/+2 and can block an additional creature.
- You can cast Act of Heroism even if the target creature won't be able to block right away, perhaps because you're the attacking player.
- Untapping an attacking creature doesn't remove it from combat.
- The effects of Act of Heroism are cumulative. If multiples resolve targeting the same creature, that creature can block that many additional creatures this turn.
Similar cards
Other instant cards with a white colour identity, ranked by how often they appear in Commander decks.
In these card lists
These card lists include Act of Heroism.