Unstoppable Ash is a rare Creature — Treefolk Warrior card from Morningtide (MOR), collector number 137. Current market price: $1.13 (foil $14.42), TCGplayer market prices via Scryfall.
Trample Champion a Treefolk or Warrior (When this enters, sacrifice it unless you exile another Treefolk or Warrior you control. When this leaves the battlefield, that card returns to the battlefield.) Whenever a creature you control becomes blocked, it gets +0/+5 until end of turn.