Toph, Greatest Earthbender + Ashaya, Soul of the Wild + Restoration Angel

Toph, Greatest Earthbender

Ashaya, Soul of the Wild

Restoration Angel

How it works

1. Cast Restoration Angel by paying its mana cost.
2. When Restoration Angel enters, it triggers, blinking Toph.
3. When Toph enters, it triggers, earthbending Restoration Angel as it's a land due to Ashaya.
4. Since zero mana was spent to cast Toph, Restoration Angel becomes a 0/0 creature and dies as a state-based action due to having 0 toughness.
5. Toph triggers, returning Restoration Angel from your graveyard to the battlefield.
6. Repeat from step 2.