Umbral Mantle + Axebane Guardian

Prerequisites

• Axebane Guardian does not have summoning sickness. You control at least three creatures with defender.
• Umbral Mantle attached to Axebane Guardian.

Steps

1. 1Activate Axebane Guardian by tapping it, adding at least three mana of any color.
2. 2Activate Axebane Guardian by paying and untapping it, giving it +2/+2 until end of turn.
3. 3Repeat.

Effects

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