Weaver of Harmony, Umbral Mantle, Honden of Life's Web, and Phyrexian Altar

Prerequisites

• Weaver of Harmony on the battlefield
• Umbral Mantle on the battlefield
• Honden of Life's Web 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 four other Shrines
• available

Steps

1. At the beginning of your upkeep, Honden of Life's Web triggers
2. Holding priority, activate Weaver of Harmony by paying and tapping it, copying Honden of Life's Web's ability
3. Resolve the copy of Honden of Life's Web's ability, creating at least five 1/1 Spirit creature tokens
4. Activate Phyrexian Altar four times by sacrificing four 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