Trumpet Blast is one of those cards players keep asking about. Here is, in plain words, what its official text says, the rulings published by Wizards of the Coast, and the combos players actually run.
Official card text
Attacking creatures get +2/+0 until end of turn.
Complete guide
Trumpet Blast is a classic red instant designed to punish your opponents for letting your army through. By providing a temporary power boost to your frontline, it can turn a small group of tokens into a lethal threat. Understanding the timing of this spell is crucial to maximizing its impact during the combat phase.
How the Blast Works
Trumpet Blast is an instant that modifies the power of your attacking creatures. It does not target, meaning it can affect creatures with Hexproof or Protection from Red. The spell checks which creatures are currently 'attacking' at the exact moment it resolves. Any creature that satisfies this condition receives a +2/+0 bonus that lasts until the end of the current turn, even after the combat phase has concluded.
Resolution Step-by-Step
To use Trumpet Blast effectively, you must first reach the Declare Attackers step. Once you have finished declaring your attackers, you gain priority to cast spells. When you cast Trumpet Blast, it goes on the stack. Upon resolution, the game identifies every creature currently designated as an attacking creature. Each of those creatures gains the +2/+0 buff. Creatures played or brought into combat after this resolution will not benefit from the boost.
Common Timing Mistakes
A frequent error is casting Trumpet Blast during the Precombat Main Phase. If you do this, you have no attacking creatures yet, and the spell will resolve doing absolutely nothing. Similarly, if a creature is removed from combat or leaves the battlefield before Trumpet Blast resolves, it will not receive the bonus. However, if a creature remains an 'attacking creature' until the end of the combat step, it keeps the bonus for the postcombat main phase and end step.
When to Play It
The optimal time to cast Trumpet Blast is usually during the Declare Attackers step after your opponent has declined to cast any removal, or during the Declare Blockers step after blocks are set. This allows you to see which creatures are unblocked to maximize player damage, or which are blocked to ensure your creatures win their respective combats.
Interaction examples
Because Trumpet Blast does not use the word 'target,' its effect applies to all valid creatures globally. If an opponent casts Deflecting Swat in response, they will find there are no targets to change. The spell will still resolve and buff all of the active player's attacking creatures as normal.
If you attack with several creatures and cast Trumpet Blast, an opponent might respond with Chaos Warp on one of your attackers. If Chaos Warp resolves first, that creature is shuffled away. Even if the card revealed by Chaos Warp is a creature and enters the battlefield, it was not 'attacking' when Trumpet Blast resolves later on the stack, so it will not receive the +2/+0 bonus.
Suppose you attack with a 1/1 creature and resolve Trumpet Blast. The creature becomes a 3/1. If it survives combat, it remains a 3/1 until the turn ends. This can be relevant if you have other effects that check for a creature's power during your second main phase.
Guide written with AI from the official text and rulings. Official English text prevails.
How it works : Trumpet Blast
Original English text — Wizards of the Coast / Scryfall
- #1· Wizards of the Coast
Only creatures that are attacking as Trumpet Blast resolves will receive the bonus. In other words, casting it before you've declared attackers usually won't do anything.
No other card is named in this ruling.
- #2· Wizards of the Coast
An "attacking creature" is one that has been declared as an attacker this combat, or one that was put onto the battlefield attacking this combat. Unless that creature leaves combat, it continues to be an attacking creature through the end of combat step, even if the player it was attacking has left the game, or the planeswalker it was attacking has left combat.
No other card is named in this ruling.
- #3· Wizards of the Coast
Even though Trumpet Blast affects only attacking creatures, the bonus will remain for the rest of the turn.
No other card is named in this ruling.
Legal formats
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Meta decks with Trumpet Blast
No archived Top 8 deck with this card yet.



Deflecting Swat
Chaos Warp