Teferi's Curse

Enchantment — Aura

Enchant artifact or creature Enchanted permanent has phasing. (It phases in or out before its controller untaps during each of their untap steps. While it's phased out, it's treated as though it doesn't exist.)

"Stepping through time is like riding a camel. It may get you where you want to go, but the ride is rarely pleasant." —Teferi