Silent Arbiter

Artifact Creature - Construct 1/5, 4 (4)
No more than one creature can attack each combat.

No more than one creature can block each combat.¹
Scholars say that arbiters exist on every world, created by an unknown hand to enforce justice.
Illus. Mark Zug

Format Legality	Legal in Vintage, Legacy, Extended, MTGO Classic Banned in Standard
Printings (1/8)	Fifth Dawn (Rare)