At the beginning of your end step, Go-Shintai triggers.
Holding priority, activate Weaver of Harmony by paying {G} and tapping it, copying Go-Shintai's ability.
Resolve the copy of Go-Shintai's ability, paying {1} to create at least four 1/1 Spirit creature tokens.
Activate Phyrexian Altar three times by sacrificing three Spirit tokens, adding {1}{U}{G}.
Activate Freed from the Real's second ability by paying {U}, untapping Weaver of Harmony.
Repeat from step 2.

Infinite colored mana

Infinite creature tokens

Infinite death triggers

Infinite ETB

Infinite LTB

Infinite sacrifice triggers

Weaver of Harmony

Freed from the Real

Go-Shintai of Shared Purpose

Phyrexian Altar

At the beginning of your end step, Go-Shintai triggers.
Holding priority, activate Weaver of Harmony by paying {G} and tapping it, copying Go-Shintai's ability.
Resolve the copy of Go-Shintai's ability, paying {1} to create at least four 1/1 Spirit creature tokens.
Activate Phyrexian Altar three times by sacrificing three Spirit tokens, adding {1}{U}{G}.
Activate Pemmin's Aura's first ability by paying {U}, untapping Weaver of Harmony.
Repeat from step 2.

Pemmin's Aura

At the beginning of your end step, Go-Shintai triggers.
Holding priority, activate Weaver of Harmony by paying {G} and tapping it, copying Go-Shintai's ability.
Resolve the copy of Go-Shintai's ability, paying {1} to create at least six 1/1 Spirit creature tokens.
Activate Phyrexian Altar five times by sacrificing five Spirit tokens, adding {4}{G}.
Activate Weaver of Harmony by paying {3} and untapping it, giving it +2/+2 until end of turn.
Repeat from step 2.

Infinitely large Weaver of Harmony until end of turn

Infinite untap of creatures you control

Infinite mana creatures you control can produce

Infinitely large creature until end of turn

Umbral Mantle

At the beginning of your end step, Go-Shintai triggers.
Holding priority, activate Weaver of Harmony by paying {G} and tapping it, copying Go-Shintai's ability.
Resolve the copy of Go-Shintai's ability, paying {1} to create at least seven 1/1 Spirit creature tokens.
Activate Phyrexian Altar six times by sacrificing six Spirit tokens, adding {5}{G}.
Activate Staff of Domination's third ability by paying {3} and tapping it, untapping Weaver of Harmony.
Activate Staff of Domination's first ability by paying {1}, untapping it.
Repeat from step 2.

Combos with "Go-Shintai of Shared Purpose"