Umbral Mantle + Topiary Lecturer
Produces: Infinite green mana, Infinite mana creatures you control can produce, Infinite untap of creatures you control, Infinitely large creature until end of turn
- Umbral Mantle
- Topiary Lecturer
- Color identity
- G
- Mana
- {2} at most
Steps
- Activate Topiary Lecturer by tapping it, adding an amount of {G} equal to its power.
- Activate Topiary Lecturer by paying {3} and untapping it, giving it +2/+2 until end of turn.
- Repeat.