Esperzoa

Artifact Creature - Jellyfish 4/3, 2U (3)
Flying

At the beginning of your upkeep, return an artifact you control to its owner's hand.
The more metal it digests, the more its jelly will fetch on the alchemists' market.
Illus. Warren Mahy

Gatherer Card Rulings [Nov 2009]

• 2/1/2009: When Esperzoa's ability resolves, if you control no other artifacts, you'll have to return Esperzoa itself.

Format Legality	Legal in Vintage, Legacy, Extended, Standard, MTGO Classic
Printings (1/9)	Conflux (Uncommon)