Weaver of Harmony, Umbral Mantle, Go-Shintai of Shared Purpose, and Phyrexian Altar

Prerequisites

• Weaver of Harmony on the battlefield
• Umbral Mantle on the battlefield
• Go-Shintai of Shared Purpose on the battlefield
• Phyrexian Altar on the battlefield
• Umbral Mantle attached to Weaver of Harmony
• Weaver of Harmony does not have summoning sickness
• You control at least five other Shrines
• available

Steps

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

Results

• Infinite colored mana
• Infinite creature tokens
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinitely large Weaver of Harmony until end of turn
• Infinite sacrifice triggers