Contested Game Ball - The Lost Caverns of Ixalan - 251

Artifact

Mana Cost: {2}

Whenever you're dealt combat damage, the attacking player gains control of this artifact and untaps it.
{2}, {T}: Draw a card and put a point counter on this artifact. Then if it has five or more point counters on it, sacrifice it and create a Treasure token.

Uncommon · The Lost Caverns of Ixalan · #251 (LCI)

Illustrated by Camille Alquier