Wildsize is an uncommon pump spell from Magic: The Gathering's Guildpact set that grants a target creature +X/+X until end of turn, where X equals its power. Appearing with Unknown rarity in some listings, it occupies budget play and casual Commander slots and currently trades for about $0.05. Collectors seeking Guildpact commons and uncommons may view it as a low-value filler or playset completer rather than a high-demand piece.