Cast Electroduplicate by paying its mana cost, creating a token copy of Bellowing Aegisaur.
Activate a mana-producing permanent you control by tapping it, adding at least {G}.
Activate Wayta by paying {G} and tapping it, causing Cacophodon and the nontoken Bellowing Aegisaur to fight each other, with each only taking 1 damage due to Temple Altisaur.
Cacophodon and Bellowing Aegisaur each trigger twice.
Resolve all Bellowing Aegisaur triggers, putting two +1/+1 counters on each other creature you control.
Resolve both Cacophodon triggers, untapping the mana-producing permanent and Wayta.
Repeat from step 2, alternating between having the token and nontoken Bellowing Aegisaur fight Cacophodon.

Infinite +1/+1 counters

Wayta, Trainer Prodigy

Bellowing Aegisaur

Cacophodon

Temple Altisaur

Electroduplicate

Give Sun-Crowned Hunters indestructible by any method.
Deal damage to Sun-Crowned Hunters, with all but 1 of that damage being prevented by Temple Altisaur.
Sun-Crowned Hunters, Ghyrson Starn, and Spark Double trigger.
Resolve the Ghyrson Starn trigger, dealing 2 damage to Sun-Crowned Hunters, with all but 1 of that damage being prevented by Temple Altisaur.
Spark Double and Sun-Crowned Hunters trigger.
Resolve the Sun-Crowned Hunters trigger, dealing 3 damage to target opponent.
Resolve the Spark Double trigger, dealing 2 damage to Sun-Crowned Hunters, with all but 1 of that damage being prevented by Temple Altisaur.
Ghyrson Starn and Sun-Crowned Hunters trigger.
Repeat from step 4.

Infinite damage

Ghyrson Starn, Kelermorph

Sun-Crowned Hunters

Spark Double

Activate a mana-producing permanent you control by tapping it, adding at least {G}.
Activate Wayta by paying {G} and tapping it, causing Cacophodon and Bellowing Aegisaur to fight each other, with each only taking 1 damage due to Temple Altisaur.
Cacophodon and Bellowing Aegisaur trigger twice.
Resolve both Bellowing Aegisaur triggers, putting two +1/+1 counters on each creature you control.
Resolve both Cacophodon triggers, untapping the mana-producing permanent and Wayta.
Repeat from step 2, alternating between having Cacophodon fight Bellowing Aegisaur and Progenitor Mimic to ensure neither dies due to lethal damage.

Progenitor Mimic

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.

Infinite creature tokens

Infinite ETB

Raptor Hatchling

Give Bellowing Aegisaur indestructible by any method.
Deal damage to Bellowing Aegisaur, with all but 1 of that damage being prevented by Temple Altisaur.
Bellowing Aegisaur, 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 Bellowing Aegisaur, with all but 1 of that damage being prevented by Temple Altisaur.
Spark Double and Bellowing Aegisaur trigger.
Resolve the Bellowing Aegisaur trigger, putting a +1/+1 counter on each other creature you control.
Resolve the Spark Double trigger, dealing 2 damage to Bellowing Aegisaur, with all but 1 of that damage being prevented by Temple Altisaur.
Ghyrson Starn and Bellowing Aegisaur trigger.
Repeat from step 5.

Infinite +1/+1 counters on all creatures you control except Bellowing Aegisaur

Give Silverclad Ferocidons indestructible by any method.
Deal damage to Silverclad Ferocidons, with all but 1 of that damage being prevented by Temple Altisaur.
Silverclad Ferocidons, 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 Silverclad Ferocidons, with all but 1 of that damage being prevented by Temple Altisaur.
Spark Double and Silverclad Ferocidons trigger.
Resolve the Silverclad Ferocidons trigger, causing each opponent to sacrifice a permanent.
Resolve the Spark Double trigger, dealing 2 damage to Silverclad Ferocidons, with all but 1 of that damage being prevented by Temple Altisaur.
Ghyrson Starn and Silverclad Ferocidons trigger.
Repeat from step 5.

Each opponent sacrifices all permanents they control

Silverclad Ferocidons

Give Frilled Deathspitter indestructible by any method.
Deal damage to Frilled Deathspitter, with all but 1 of that damage being prevented by Temple Altisaur.
Frilled Deathspitter, Ghyrson Starn, and Spark Double trigger.
Resolve the Ghyrson Starn trigger, dealing 2 damage to Frilled Deathspitter, with all but 1 of that damage being prevented by Temple Altisaur.
Spark Double and Frilled Deathspitter trigger.
Resolve the Frilled Deathspitter trigger, dealing 2 damage to target opponent.
Resolve the Spark Double trigger, dealing 2 damage to Frilled Deathspitter, with all but 1 of that damage being prevented by Temple Altisaur.
Ghyrson Starn and Frilled Deathspitter trigger.
Repeat from step 4.

Combos with "Temple Altisaur"