Ulasht, the Hate Seed + Death's Presence + Phyrexian Altar

Ulasht, the Hate Seed

Death's Presence

Phyrexian Altar

How it works

1. Activate Ulasht's first ability by paying 1 and removing a +1/+1 counter from it, creating a 1/1 Saproling creature token.
2. Activate Phyrexian Altar by sacrificing the Saproling, adding 1.
3. When the Saproling dies, Death's Presence triggers, putting a +1/+1 counter on Ulasht.
4. Repeat.

This clever loop turns Ulasht, the Hate Seed into a self-sustaining engine by cycling its counters into fuel. When you activate Ulasht to spawn a Saproling token, you can immediately feed that token to Phyrexian Altar to generate the exact mana needed to pay for the next activation. Meanwhile, Death's Presence watches from the sidelines, stepping in every time the sacrificed token hits the graveyard to funnel its power right back onto Ulasht as a fresh +1/+1 counter.