Prerequisites
- Careful Cultivation on the battlefield
- Umbral Mantle on the battlefield
- Biomancer's Familiar on the battlefield
Steps
- Activate the creature with Careful Cultivation and Umbral Mantle attached by tapping it, adding
- Activate the creature by paying
and untapping it, causing it to get +2/+2 until end of turn
- Repeat
Results
- Infinite green mana
- Infinite power and toughness for a creature until end of turn
- Infinite untap of creatures you control
- Infinite mana creatures you control can produce
- Infinitely large creature until end of turn
Required Cards 3
Careful Cultivation
Enchantment — Aura
Umbral Mantle
Artifact — Equipment
Biomancer's Familiar
Creature — Mutant