Basalt Monolith + Tough Cookie + Agatha of the Vile Cauldron

Prerequisites

• Basalt Monolith does not have summoning sickness.
• Agatha of the Vile Cauldron has power 1 or greater.

Steps

1. 1Activate Tough Cookie's first ability by paying at most , causing Basalt Monolith to become a 4/4 artifact creature until end of turn.
2. 2Activate Basalt Monolith's first ability by tapping it, adding .
3. 3activate Basalt Monolith's second ability by paying at most , untapping it.
4. 4Repeat from step 2.

Effects

• Infinite colorless mana