Enduring Vitality + Zur, Eternal Schemer + Phyrexian Altar + Yarus, Roar of the Old Gods

Enduring Vitality

Zur, Eternal Schemer

Phyrexian Altar

Yarus, Roar of the Old Gods

How it works

1. If Enduring Vitality is not a creature, activate Zur by paying 1, causing Enduring Vitality to become a creature.
2. Activate Enduring Vitality by tapping it, adding .
3. Activate Phyrexian Altar by sacrificing Enduring Vitality, adding 1.
4. When Enduring Vitality dies, it triggers, returning itself from your graveyard to the battlefield as an enchantment.
5. Repeat.