Renegade Rallier + Karmic Guide + Animate Dead + Phyrexian Altar

Renegade Rallier

Karmic Guide

Animate Dead

Phyrexian Altar

How it works

1. Cast Renegade Rallier by paying 1.
2. Renegade Rallier enters the battlefield, targeting Animate Dead.
3. Holding priority, activate Phyrexian Altar by sacrificing Renegade Rallier, adding one mana of any color.
4. Resolve the Renegade Rallier trigger, returning Animate Dead from your graveyard to the battlefield.
5. Animate Dead enters the battlefield, returning Karmic Guide from your graveyard to the battlefield.
6. Karmic Guide enters the battlefield, targeting Renegade Rallier.
7. Holding priority, activate Phyrexian Altar by sacrificing Karmic Guide, adding one mana of any color.
8. Resolve the Karmic Guide trigger, returning Renegade Rallier from your graveyard to the battlefield.
9. Repeat from step 2.