Fiery Impulse
Instant
Fiery Impulse deals 2 damage to target creature.
Spell mastery — If there are two or more instant and/or sorcery cards in your graveyard, Fiery Impulse deals 3 damage instead.
"Well, this got out of hand."
Illustrated by
The List#ORI-145CommonEnglishLegality
Rulings
Jun 22, 2015
Check to see if there are two or more instant and/or sorcery cards in your graveyard as the spell resolves to determine whether the spell mastery ability applies. The spell itself won’t count because it’s still on the stack as you make this check.