At the beginning of your combat phase, Fire Nation Turret triggers, giving Hellkite Charger firebending 2 until end of turn.
Declare Hellkite Charger as an attacker, triggering its innate ability and each instance of firebending it has.
Resolve all firebending triggers, adding {R}{R} for each trigger.
Resolve the other Hellkite Charger trigger, causing you to pay {5}{R}{R} to untap all attacking creatures you control and get an additional combat phase after this one.
Repeat each combat phase.

Infinite combat phases

Infinite damage

Infinite red mana

Hellkite Charger

Fire Nation Turret

At the beginning of your combat phase, Fire Nation Turret triggers, giving The Incredible Hulk +2/+0 and firebending 2 until end of turn.
Declare The Incredible Hulk as an attacker. Its firebending ability triggers, adding {R}{R}.
Holding priority, activate Pyrohemia by paying {R}, dealing 1 damage to each creature and player.
The Incredible Hulk triggers, putting a +1/+1 counter on it, untapping it and giving you an additional combat phase after this one.
Repeat each combat phase.

Near-infinite combat phases

Near-infinite damage to all players

Near-infinite +1/+1 counters on a creature

Bruce Banner // The Incredible Hulk

Pyrohemia

Activate Fire Nation Turret by paying {R}, putting a charge counter on it.
Repeat step 1 two additional times.
Activate Resourceful Defense by paying {4}{W}, moving all charge counters from Fire Nation Turret onto Magistrate's Scepter.
Activate Magistrate's Scepter's second ability by tapping it and removing three charge counters from it, causing you to take an extra turn after this one.
Repeat each turn.

Infinite turns

Lock

Magistrate's Scepter

Resourceful Defense

Activate Trazyn using Fire Nation Turret's ability by paying {R}, putting a charge counter on Trazyn.
Repeat step 1 two additional times.
Activate Trazyn using Magistrate's Scepter's second ability by tapping it and removing three charge counters from it, causing you to take an extra turn after this one.
Repeat each turn.

Combos with "Fire Nation Turret"