Ephemerate + Warden of the Eye + Temporal Manipulation
Ephemerate
Warden of the Eye
Temporal Manipulation
Infinite turnsLock
How it works
Cast Temporal Manipulation by paying its mana cost, causing you to take an extra turn after this one.
Cast Ephemerate by paying , blinking Warden of the Eye and exiling Ephemerate.
When Warden of the Eye enters, it triggers, returning Temporal Manipulation from your graveyard to your hand.
Move to your next turn. At the beginning of your upkeep, Ephemerate's rebound ability triggers, causing you to cast it from exile without paying its mana cost.
Resolve Ephemerate, blinking Warden of the Eye.
When Warden of the Eye enters, it triggers, returning Ephemerate from your graveyard to your hand.