Mightstone

Artifact, 4 (4)
Attacking creatures get +1/+0.¹
While exploring the sacred cave of Koilos with his brother Mishra and their master Tocasia, Urza fell behind in the Hall of Tagsin, where he discovered the remarkable Mightstone.
Illus. Pete Venters

Gatherer Card Rulings [Nov 2009]

• 10/4/2004: The +1/+0 applies to attacking creatures from all players.

Format Legality	Legal in Vintage, Legacy Banned in Extended, Standard
Printings (1/1)	Antiquities (Uncommon)