Evolution Witness + Agonasaur Rex + Insidious Roots + Ashnod's Altar + Tyvar, Jubilant Brawler

Evolution Witness

Agonasaur Rex

Insidious Roots

Ashnod's Altar

Tyvar, Jubilant Brawler

How it works

1. Activate Agonasaur Rex's cycling ability by paying 2 and discarding it.
2. Agonasaur Rex triggers, putting two +1/+1 counters on Evolution Witness.
3. Evolution Witness triggers, returning Agonasaur Rex from your graveyard to your hand.
4. Insidious Roots triggers, creating a 0/1 Plant creature token, and then putting a +1/+1 counter on each Plant you control.
5. Resolve the Agonasaur Rex ability from step 1, causing you to draw a card.
6. Activate the Plant by tapping it, adding .
7. Activate Ashnod's Altar by sacrificing the tapped Plant, adding CC.
8. Repeat.

This clever loop centers around cycling Agonasaur Rex to trigger Evolution Witness, which uses its retrieved +1/+1 counter trigger to pull the dinosaur right back to your hand while fueling a continuous stream of value. Insidious Roots capitalizes on Agonasaur Rex leaving your graveyard by spawning a Plant token that can be tapped for mana and then sacrificed to Ashnod's Altar to generate the exact resources needed to fund your next cycle. Meanwhile, Tyvar, Jubilant Brawler sits quietly in the wings, ready to support your creature-based toolkit and ensure your engine hums along smoothly.