Enduring Renewal + Crystalline Crawler + Light of Promise + Kokusho, the Evening Star + Ashnod's Altar

Enduring Renewal

Crystalline Crawler

Light of Promise

Kokusho, the Evening Star

Ashnod's Altar

How it works

1. Cast Kokusho by paying 4.
2. Activate Ashnod's Altar by sacrificing Kokusho, adding CC.
3. When Kokusho dies, it and Enduring Renewal trigger.
4. Resolve the Enduring Renewal trigger, returning Kokusho from your graveyard to your hand.
5. Resolve the Kokusho trigger, causing each opponent to lose 5 life and you to gain life equal to the life lost this way.
6. Crystalline Crawler triggers, putting a number of +1/+1 counters on it equal to the life you gained.
7. Activate Crystalline Crawler's first ability four times by removing five +1/+1 counters from it, adding 2.
8. Repeat.

This loop turns the legendary dragon Kokusho, the Evening Star into a lethal, self-sustaining engine by feeding her directly into Ashnod's Altar for mana. Every time she hits the graveyard, Enduring Renewal catches her on the rebound and safely returns her straight to your hand for recasting. Meanwhile, the life drain from Kokusho is caught by Light of Promise enchanting Crystalline Crawler, turning your incoming life total into a massive windfall of +1/+1 counters on the Crawler. You can then shave those very counters away using Crystalline Crawler's own ability to generate all the colored mana you need to repeat the cycle infinitely, draining the table dry.