Basalt Monolith + Tough Cookie + Biomancer's Familiar

Prerequisites

• Basalt Monolith does not have summoning sickness.

Steps

1. 1Activate Basalt Monolith's first ability by tapping it, adding .
2. 2Activate Tough Cookie's first activated ability by paying , making Basalt Monolith a 4/4 artifact creature until end of turn.
3. 3Activate Basalt Monolith's last ability by paying , untapping it.
4. 4Activate Basalt Monolith's first ability by tapping it, adding .
5. 5Repeat from step 3.

Effects

• Infinite colorless mana