Wave of Rats is a rare Creature — Rat card from New Capenna Commander (NCC), collector number 142. Current market price: $4.09, TCGplayer market prices via Scryfall.
Trample When this creature dies, if it dealt combat damage to a player this turn, return it to the battlefield under its owner's control. Blitz {4}{B} (If you cast this spell for its blitz cost, it gains haste and "When this creature dies, draw a card." Sacrifice it at the beginning of the next end step.)