Hostility + Reiterate + Kazuul's Fury // Kazuul's Cliffs + Phyrexian Altar

Hostility

Reiterate

Kazuul's Fury // Kazuul's Cliffs

Phyrexian Altar

How it works

1. Cast Kazuul's Fury by paying 2 and sacrificing a creature you control with power seven or greater.
2. Holding priority, cast Reiterate with buyback by paying 4, creating a copy of Kazuul's Fury and returning Reiterate to your hand.
3. Resolve the Kazuul's Fury copy, causing you to create at least seven 3/1 Elemental Shaman creature tokens with haste due to Hostility.
4. Activate Phyrexian Altar seven times by sacrificing seven Elemental Shamans, adding 5.
5. Repeat from step 2 an arbitrarily large number of times.
6. Activate Phyrexian Altar by sacrificing Hostility, adding .
7. Hostility dies, shuffling itself into your library from your graveyard.
8. Cast Reiterate with buyback by paying 4, creating a copy of Kazuul's Fury and returning Reiterate to your hand.
9. Resolve the Kazuul's Fury copy, dealing at least seven damage to any target.
10. Repeat from step 8.

This ingenious loop transforms a single large creature into an unstoppable engine of destruction by turning damage straight into an army. With Hostility safely on the battlefield, the damage dealt by Kazuul's Fury // Kazuul's Cliffs is prevented and replaced with a horde of hasty Elemental Shamans, which you immediately feed into Phyrexian Altar to generate the mana needed to recast and buyback Reiterate. Because Reiterate copies your original spell while returning itself to your hand, you can continuously duplicate Kazuul's Fury // Kazuul's Cliffs to fuel the combo infinitely—and once you have established infinite mana and tokens, you can even sacrifice Hostility to the altar to loop the spell directly at your opponents' life totals, relying on Hostility's replacement trigger to shuffle itself back into your library so the cycle never ends.