Avenge {4}{W}{W}
Sorcery
This spell costs {2} less to cast if a player attacked you during their last turn.
Destroy all creatures. You gain 1 life for each creature destroyed this way.
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Cards that do something similar expected a card that isn't here?
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Fumigate 100%
$0.27#1007
"Destroy all creatures. You gain 1 life for each creature destroyed this way."
Fast Forward 82%
$0.36#9862
"This spell costs {1} less to cast for each opponent you attacked this turn."
Righteous Fury 82%
#22280
"Destroy all tapped creatures. You gain 2 life for each creature destroyed this way."
Focus the Mind 81%
$0.24#9855
"This spell costs {2} less to cast if you've cast another spell this turn."