Basalt Monolith + The Blackstaff of Waterdeep + Biomancer's Familiar

Basalt Monolith

The Blackstaff of Waterdeep

Biomancer's Familiar

How it works

1. Activate Basalt Monolith's first ability by tapping it, adding CCC.
2. Activate The Blackstaff of Waterdeep by paying 1 and tapping it, causing Basalt Monolith to become an artifact creature until end of turn.
3. Activate Basalt Monolith's second ability by paying 1, untapping it.
4. Activate Basalt Monolith's first ability by tapping it, adding CCC.
5. Repeat from step 3.

By turning Basalt Monolith into a 4/4 creature with The Blackstaff of Waterdeep, you clever alchemists open the door to a massive discount. Ordinarily, untapping Basalt Monolith costs three mana—leaving you breaking even on its three-mana production. However, with Biomancer's Familiar reducing the cost of activated abilities of creatures you control by {2}, that untap cost plummets to just a single mana! Tapping the Monolith for three colorless mana and spending one to untap it leaves you with a net gain of two colorless mana each time, easily looping to fuel infinite colorless mana.