Riparian Tiger is a common Creature — Cat card from The List (PLST), collector number KLD-167. Current market price: $0.34, TCGplayer market prices via Scryfall.
Trample When this creature enters, you get {E}{E} (two energy counters). Whenever this creature attacks, you may pay {E}{E}. If you do, it gets +2/+2 until end of turn.