Declare two creatures you control as attackers, attacking two different opponents.
Holding priority, activate Nemesis Phoenix by paying {R}, returning it from your graveyard to the battlefield tapped and attacking.
Activate Phyrexian Altar by sacrificing Nemesis Phoenix, adding {R}.
Repeat from step 2.

Infinite creature LTB

Infinite creature ETB

Infinite creature sacrifice triggers

Infinite death triggers

Nemesis Phoenix

Convergence of Dominion

Phyrexian Altar

Declare two creatures you control as attackers, attacking two different opponents.
Holding priority, activate Nemesis Phoenix by paying {R}, returning it from your graveyard to the battlefield tapped and attacking.
Activate Thermopod by sacrificing Nemesis Phoenix, adding {R}.
Repeat from step 2.

Thermopod

Declare two creatures you control as attackers, attacking two different opponents.
Holding priority, activate Nemesis Phoenix by paying {2}{R}, returning it from your graveyard to the battlefield tapped and attacking.
Activate Krark-Clan Ironworks by sacrificing Nemesis Phoenix, adding {C}{C}.
When Nemesis Phoenix dies, Crime Novelist triggers, putting a +1/+1 counter on it and adding {R}.
Repeat from step 2.

Infinite +1/+1 counters on a creature

Crime Novelist

Krark-Clan Ironworks

Mycosynth Lattice

Declare two creatures you control as attackers, attacking two different opponents.
Holding priority, activate Nemesis Phoenix by paying {2}{R}, returning it from your graveyard to the battlefield tapped and attacking.
Activate Ashnod's Altar by sacrificing Nemesis Phoenix, adding {C}{C}.
When Nemesis Phoenix dies, Crime Novelist triggers, putting a +1/+1 counter on it and adding {R}.
Repeat from step 2.

Combos with "Nemesis Phoenix"