Deal damage to Wrathful Raptors.
Wrathful Raptors and Blazing Sunsteel trigger.
Resolve the Wrathful Raptors trigger, dealing damage to an applicable target
Resolve the Blazing Sunsteel trigger, dealing damage to Wrathful Raptors.
Repeat from step 2.

Infinite damage

Blazing Sunsteel

Wrathful Raptors

Deal damage to Wrathful Raptors.
Wrathful Raptors and Fiendlash trigger.
Resolve the Wrathful Raptors trigger, dealing damage to an applicable target.
Resolve the Fiendlash trigger, targeting you, but dealing damage to Wrathful Raptors instead due to Pariah.
Repeat from step 2.

Fiendlash

Pariah

Deal damage to Wrathful Raptors.
Wrathful Raptors triggers, dealing damage to an applicable target
Guilty Conscience triggers, dealing damage to Wrathful Raptors.
Repeat from step 2.

Guilty Conscience

Declare any creature as an attacker. Dawnsire triggers, dealing 100 damage to  Wrathful Raptors.
Wrathful Raptors triggers, dealing 100 damage to target opponent.

Near-infinite damage to any target

Near-infinite damage to one opponent

Dawnsire, Sunstar Dreadnought

Deal damage to Wrathful Raptors.
Wrathful Raptors and Repercussion trigger.
Resolve the Wrathful Raptors trigger, dealing damage to an applicable target.
Resolve the Repercussion trigger, dealing damage to Wrathful Raptors instead of you due to Pariah.
Repeat from step 2.

Repercussion

Cast Wheel of Misfortune by paying {2}{R}, choosing an arbitrarily large number and having Wheel of Misfortune deal that much damage to Wrathful Raptors instead of you due to Pariah if you chose the largest number.
Wrathful Raptors triggers, dealing that much damage to an applicable target.

Wheel of Misfortune

Earthbend a basic land you control.
Cast Legolas's Quick Reflexes by paying {G}, targeting the earthbent land.
Activate Earthcraft by tapping the earthbent land, targeting the earthbent land.
The land triggers, causing it to deal damage equal to its power to Wrathful Raptors.
Wrathful Raptors triggers, dealing that much damage to an applicable target.
Resolve the Earthcraft trigger, untapping the earthbent land.
Repeat from step 3.

Combos with "Wrathful Raptors"