Requires

Weaver of Harmony must be on the battlefield. Umbral Mantle must be on the battlefield. Go-Shintai of Shared Purpose must be on the battlefield. Phyrexian Altar must be 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. Mana needed:

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