Cause a Dinosaur to enter the battlefield under your control.
Forerunner of the Empire's second ability triggers, dealing 1 damage to each creature.
Raptor Hatchling triggers, and Rite of Passage triggers for each of your creatures dealt damage this way.
Resolve all Rite of Passage triggers, putting a +1/+1 counter on each creature you control.
Resolve the Raptor Hatchling trigger, creating a 3/3 Dinosaur creature token.
Repeat from step 2.

Infinite creature tokens

Infinite damage to creatures

Infinite creature ETB

Rite of Passage

Forerunner of the Empire

Raptor Hatchling

Deal damage to Raptor Hatchling.
Raptor Hatchling and Blazing Sunsteel trigger.
Resolve the Raptor Hatchling trigger, creating a creature token.
Resolve the Blazing Sunsteel trigger, dealing damage to Raptor Hatchling.
Repeat from step 2.

Infinite damage

Blazing Sunsteel

Give Raptor Hatchling indestructible by any method.
Cause a creature to enter the battlefield.
When it enters the battlefield, Warstorm Surge triggers, causing that creature to deal damage to your indestructible Raptor Hatchling.
Raptor Hatchling triggers, creating a 3/3 green Dinosaur creature token with trample.
Warstorm Surge triggers, causing the Dinosaur token to deal 3 damage to the indestructible Raptor Hatchling.
Repeat from step 4.

Warstorm Surge

Give Raptor Hatchling indestructible, if needed.
Activate Goblin Bombardment by sacrificing another creature you control, dealing 1 damage to Raptor Hatchling.
Raptor Hatchling triggers, creating a 3/3 Dinosaur creature token.
Repeat from step 2.

Infinite death triggers

Infinite creature LTB

Infinite creature sacrifice triggers

Goblin Bombardment

Give Raptor Hatchling indestructible, if needed.
Activate Blasting Station by tapping it and sacrificing another creature you control, dealing 1 damage to Raptor Hatchling.
Raptor Hatchling triggers, creating a 3/3 Dinosaur creature token.
When the Dinosaur enters the battlefield, Blasting Station triggers, untapping Blasting Station.
Repeat from step 2.

Blasting Station

Give Raptor Hatchling indestructible.
Cast Electric Seaweed by paying {2}{R}{R}. When it enters, it triggers.
Activate Electric Seaweed by tapping it, dealing 1 damage to Raptor Hatchling.
Raptor Hatchling triggers, creating a 3/3 Dinosaur creature token.
Cause another creature to die.
When the creature dies, Electric Seaweed triggers, dealing 1 damage to each non-Wall creature. This will cause the creature with toughness equal to 1 to die.
Raptor Hatchling and Electric Seaweed trigger.
Resolve the Raptor Hatchling trigger, creating a 3/3 Dinosaur creature token.
Resolve the Electric Seaweed trigger, dealing 1 damage to each non-Wall creature. This will cause the creature with toughness equal to 2 to die.
Raptor Hatchling and Electric Seaweed trigger.
Resolve the Raptor Hatchling trigger, creating a 3/3 Dinosaur creature token.
Resolve the Electric Seaweed trigger, dealing 1 damage to each non-Wall creature. This will cause the oldest Dinosaur token to die.
Repeat from step 10.

Infinite damage to most creatures

Electric Seaweed

Activate Ashnod's Altar by sacrificing Thorin, adding {C}{C}.
When Thorin dies, Nim Deathmantle triggers, causing you to pay {4} to return Thorin from your graveyard to the battlefield and attach Nim Deathmantle to it.
When Thorin enters, it triggers, attaching Nim Deathmantle to Raptor Hatchling, and then having it deal damage to itself.
Raptor Hatchling triggers, creating a creature token.
Activate Ashnod's Altar by sacrificing the creature token, adding {C}{C}.
Repeat.

Nim Deathmantle

Ashnod's Altar

Thorin, Mountain-king

Give Raptor Hatchling indestructible, if needed.
Cause a creature to enter the battlefield under your control.
Halana triggers, causing you to pay {2} to have that creature deal damage equal to its power to Raptor Hatchling.
Raptor Hatchling triggers, causing you to create a 3/3 Dinosaur creature token.
When the Dinosaur enters the battlefield, Halana triggers.
Holding priority, activate Ashnod's Altar by sacrificing the Dinosaur, adding {C}{C}.
Resolve the Halana trigger, causing you to pay {2} to deal 1 damage to Raptor Hatchling.
Repeat from step 4.

Halana, Kessig Ranger

Give Raptor Hatchling indestructible by any method.
Deal damage to Raptor Hatchling, with all but 1 of that damage being prevented by Temple Altisaur.
Raptor Hatchling, Ghyrson Starn, and Spark Double trigger.
Resolve the Spark Double trigger, dealing 2 damage to any target.
Resolve the Ghyrson Starn trigger, dealing 2 damage to Raptor Hatchling, with all but 1 of that damage being prevented by Temple Altisaur.
Spark Double and Raptor Hatchling trigger.
Resolve the Raptor Hatchling trigger, creating a 3/3 Dinosaur.
Resolve the Spark Double trigger, dealing 2 damage to Raptor Hatchling, with all but 1 of that damage being prevented by Temple Altisaur.
Ghyrson Starn and Raptor Hatchling trigger.
Repeat from step 5.

Combos with "Raptor Hatchling"