Rowan, Scion of War + Phyrexian Altar + Lab Rats

Rowan, Scion of War

Phyrexian Altar

Lab Rats

How it works

1. Activate Rowan by tapping it, reducing the cost of all black and/or red spells you cast this turn by at least 4.
2. Cast Lab Rats with buyback by paying due to Rowan's ability, creating a 1/1 Rat creature token and returning Lab Rats to your hand.
3. Activate Phyrexian Altar by sacrificing the Rat, adding .
4. Repeat from step 2.

This clever loop turns life loss into an endless engine of sacrifice and recursion, entirely legal across Commander, Legacy, Oathbreaker, and Vintage. By tapping Rowan, Scion of War, you cash in on your own life total to radically discount your black and red spells for the turn. That massive discount allows you to cast Lab Rats for just a single black mana while effortlessly paying its buyback cost, netting you a steady stream of Rat tokens directly to your hand. From there, Phyrexian Altar provides the final mechanical bridge, letting you sacrifice each newly minted Rat to generate the exact mana needed to recast Lab Rats all over again.