Cast Ajani's Presence by paying {2}{W}{W} total, giving two creatures an opponent controls indestructible until end of turn.
Deal noncombat damage to one of the indestructible creatures, dealing an increased amount of damage instead due to Furnace of Rath.
Toralf triggers, dealing an amount of damage over the excess damage to the second indestructible creature due to Furnace of Rath.
Toralf triggers, dealing an amount of damage over the excess damage to the first indestructible creature due to Furnace of Rath.
Repeat from step 3 an arbitrarily large number of times.
Resolve a Toralf trigger, dealing infinite damage to any target.

Infinite damage to one opponent

Toralf, God of Fury // Toralf's Hammer

Ajani's Presence

Furnace of Rath

Cast Apex Altisaur by paying {7}{G}{G}.
When Apex Altisaur enters the battlefield, its first ability triggers.
Holding priority, cast Ajani's Presence by paying {2}{W}{W}, giving Apex Altisaur and any creature an opponent controls +1/+1 and indestructible until end of turn.
Resolve the Apex Altisaur trigger, causing Apex Altisaur to fight the indestructible creature the opponent controls.
Apex Altisaur's second ability triggers, and Fall of Cair Andros triggers if the opposing creature's toughness is less than 0.
Resolve the Fall of Cair Andros trigger, if applicable, causing you to put a number of +1/+1 counters on an Army you control equal to the excess damage.
Resolve the Apex Altisaur trigger, causing it to fight the indestructible creature the opponent controls.
Repeat from step 5.

Infinite +1/+1 counters on a creature

Apex Altisaur

Fall of Cair Andros

Cast Ajani's Presence by paying {2}{W}{W} total, giving two creatures an opponent controls indestructible until end of turn.
Cast Toralf by paying {2}{R}{R}.
Deal noncombat damage to one of the indestructible creatures.
Toralf triggers, dealing an amount of damage over the excess damage to the second indestructible creature due to [[Increaser - Damage]].
Toralf triggers, dealing an amount of damage over the excess damage to the first indestructible creature due to [[Increaser - Damage]].
Repeat from step 3 an arbitrarily large number of times.
Resolve a Toralf trigger, dealing infinite damage to any target.

Neriv, Heart of the Storm

Cast Apex Altisaur by paying {7}{G}{G}.
When Apex Altisaur enters the battlefield, its first ability triggers.
Holding priority, cast Ajani's Presence by paying {2}{W}{W}, giving Apex Altisaur and any creature an opponent controls +1/+1 and indestructible until end of turn.
Resolve the Apex Altisaur trigger, causing Apex Altisaur to fight the indestructible creature the opponent controls.
Apex Altisaur's second ability triggers, and Magmatic Galleon's second ability triggers if the opposing creature's toughness is less than 0.
Resolve the Magmatic Galleon trigger, if applicable, creating a Treasure artifact token.
Resolve the Apex Altisaur trigger, causing it to fight the indestructible creature the opponent controls.
Repeat from step 5.

Infinite colored mana

Infinite Treasure tokens

Magmatic Galleon

Cast Apex Altisaur by paying {7}{G}{G}.
When Apex Altisaur enters the battlefield, its first ability triggers.
Holding priority, cast Ajani's Presence by paying {2}{W}{W}, giving Apex Altisaur and any creature an opponent controls +1/+1 and indestructible until end of turn.
Resolve the Apex Altisaur trigger, causing Apex Altisaur to fight the indestructible creature the opponent controls.
Apex Altisaur's second ability triggers, and Toralf triggers if the opposing creature's toughness is less than 0.
Resolve the Toralf trigger, if applicable, dealing damage equal to the excess to any target.
Resolve the Apex Altisaur trigger, causing it to fight the indestructible creature the opponent controls.
Repeat from step 5.

Infinite damage

Cast Ajani's Presence by paying {W}, giving a creature an opponent controls indestructible until end of turn.
Deal noncombat damage to the indestructible creature.
Toralf triggers, dealing damage equal to the excess to an opponent.
Fear of Burning Alive triggers, dealing damage equal to the damage Toralf dealt to the indestructible creature.
Repeat from step 3.

Combos with "Ajani's Presence"