Sierra, Nuka's Biggest Fan (Extended Art) (PIP-372) - Fallout: (Extended Art) Foil

The Nuka-Cola Challenge — Whenever one or more creatures you control deal combat damage to a player, put a quest counter on Sierra and create a Food token.
Whenever you sacrifice a Food, target creature you control gets +X/+X until end of turn, where X is the number of quest counters on Sierra.