Valduk, Keeper of the Flame + Phyrexian Altar + Aggravated Assault

Valduk, Keeper of the Flame

Phyrexian Altar

Aggravated Assault

How it works

1. At the beginning of your combat phase, Valduk triggers, creating at least five 3/1 Elemental creature tokens with trample and haste.
2. Move to your postcombat main phase.
3. Activate Phyrexian Altar five times by sacrificing five Elementals, adding 3.
4. Activate Aggravated Assault by paying 3, untapping all creatures you control and causing you to get an additional combat and main phase after this one.
5. Repeat.
6. If Valduk has at least six Auras and/or Equipments attached to it, this combo nets infinite Elemental tokens and colored mana.

This explosive loop hinges on Valduk, Keeper of the Flame's ability to swarm the board with 3/1 Elemental tokens at the onset of your combat phase, provided it is properly suited up with Auras and Equipments. Once those tokens hit the battlefield with haste, you move to your postcombat main phase to sacrifice them to Phyrexian Altar, effortlessly converting your temporary army into the exact colored mana needed to fuel Aggravated Assault. Resolving Aggravated Assault untaps Valduk and grants you an additional combat phase, which immediately triggers Valduk all over again to replenish your sacrifice fodder.