Weaver of Harmony + Umbral Mantle + Sanctum of Fruitful Harvest

Prerequisites

• Umbral Mantle attached to Weaver of Harmony.
• Weaver of Harmony does not have summoning sickness.
• You control at least four other Shrines.

Steps

1. 1At the beginning of your precombat main phase, Sanctum of Fruitful Harvest triggers.
2. 2Holding priority, activate Weaver of Harmony by paying and tapping it, copying Sanctum of Fruitful Harvest's ability.
3. 3Resolve the copy of Sanctum of Fruitful Harvest's ability, adding at least .
4. 4Activate Weaver of Harmony by paying and untapping it, giving it +2/+2 until end of turn.
5. 5Repeat from step 2.

Effects

• Infinite colored mana
• Infinite mana creatures you control can produce
• Infinite untap of creatures you control
• Infinitely large creature until end of turn