Greenweaver Druid + Umbral Mantle + Biomancer's Familiar

Prerequisites

• Umbral Mantle attached to Greenweaver Druid.
• Greenweaver Druid does not have summoning sickness.

Steps

1. 1Activate Greenweaver Druid by tapping it, adding .
2. 2Activate Greenweaver Druid by paying and untapping it, giving itself +2/+2 until end of turn.
3. 3Repeat.

Effects

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