Spined Tyrranax is a uncommon Creature — Dinosaur Beast card from Foundations Jumpstart (J25), collector number 26. Current market price: $0.23, TCGplayer market prices via Scryfall.
At the beginning of combat on your turn, you may pay {2}{G}. When you do, put a +1/+1 counter on target creature. That creature gains trample until end of turn. (It can deal excess combat damage to the player or planeswalker it's attacking.)