Ashaya, Soul of the Wild + Phyrexian Altar + Bumi, Eclectic Earthbender

Ashaya, Soul of the Wild

Phyrexian Altar

Bumi, Eclectic Earthbender

How it works

1. Cast Bumi by paying its mana cost plus commander tax if applicable
2. When Bumi enters, its earthbend ability triggers, causing it to earthbend itself as it is a Forest due to Ashaya.
3. Activate Phyrexian Altar by sacrificing Bumi
4. When Bumi dies, it triggers, returning itself from your graveyard to the battlefield tapped.
5. When Bumi enters, its earthbend ability triggers, causing it to earthbend itself as it is a Forest due to Ashaya.
6. Repeat from step 3.