Midnight Snack
Raid — At the beginning of your end step, if you attacked this turn, create a Food token. (It's an artifact with ", 
, Sacrifice this token: You gain 3 life.")
, Sacrifice this enchantment: Target opponent loses X life, where X is the amount of life you gained this turn.
Illustrated by Kai Carpenter
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Raid abilities care only that you attacked with a creature. It doesn't matter how many creatures you attacked with or which player, planeswalker, or battle those creatures attacked.
The value of X is determined only once, as Midnight Snack's last ability resolves.
Raid abilities evaluate the entire turn to see if you attacked with a creature. That creature doesn't have to still be on the battlefield. Similarly, the player, planeswalker, or battle it attacked doesn't have to still be in the game or on the battlefield.
