Tayam, Luminous Enigma + Cathodion + Carrion Feeder + Mikaeus, the Unhallowed

Tayam, Luminous Enigma

Cathodion

Carrion Feeder

Mikaeus, the Unhallowed

How it works

1. Activate Carrion Feeder by sacrificing Cathodion.
2. Cathodion dies, triggering itself and its undying ability.
3. Resolve the first Cathodion trigger, adding CCC.
4. Resolve the second Cathodion trigger, returning it to the battlefield with a +1/+1 counter and a vigilance counter.
5. Resolve the Carrion Feeder ability, putting a +1/+1 counter on it.
6. Activate Tayam by paying 3, removing a counter from Carrion Feeder and removing both counters from Cathodion, causing you to mill three cards and allowing you to return a permanent card with mana value three or less from your graveyard to the battlefield.
7. Repeat.