Losheel, Clockwork Scholar is a rare Legendary Creature — Elephant Artificer card from Commander 2021 (C21), collector number 345. Current market price: $4.27, TCGplayer market prices via Scryfall.
Prevent all combat damage that would be dealt to attacking artifact creatures you control. Whenever one or more artifact creatures you control enter, draw a card. This ability triggers only once each turn.