Rule 420.4

Some Abilities trigger when cards are played or otherwise check whether cards have been played.

• 420.4.a Any such triggered abilities trigger when the act of playing the card has been completed by the resolution of the card.
• 420.4.b Non-triggered abilities and conditional clauses that check cards being played do so by means of referencing whether…

Rulings that cite this rule

• I have a Ravenbloom Student on the board and I haven’t played any spells this turn. What happens when I play Rebuttal targeting my opponent’s Stupefy and pay [A] on resolution? After everything resolves, how much will Battering Ram cost? Will my opponent’s Legion abilities be active?

Official Core Rules