Wave of Rats is a rare Creature — Rat card from New Capenna Commander Promos (PNCC), collector number 41p. Current market price: — (foil $12.29), 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.)