Null Champion is a common Creature — Zombie Warrior card from Rise of the Eldrazi (ROE), collector number 121. Current market price: $0.12 (foil $0.69), TCGplayer market prices via Scryfall.
Level up {3} ({3}: Put a level counter on this. Level up only as a sorcery.) LEVEL 1-3 4/2 LEVEL 4+ 7/3 {B}: Regenerate this creature.