Basalt Monolith + Toymaker + Agatha of the Vile Cauldron
Basalt Monolith
Toymaker
Agatha of the Vile Cauldron
Requires
Basalt Monolith must be on the battlefield.
Toymaker must be on the battlefield.
Agatha of the Vile Cauldron must be on the battlefield.
Toymaker does not have summoning sickness.
You have at least one card in hand.
Basalt Monolith does not have summoning sickness.
Mana needed: 
Steps
- Activate Toymaker by paying , tapping it and discarding a card, causing Basalt Monolith to become an artifact creature until end of turn.
- Activate Basalt Monolith's first ability by tapping it, adding .
- Activate Basalt Monolith's last ability by paying at most
, untapping it. - Repeat.
Results
Infinite colorless mana.
Agatha of the Vile Cauldron
0.11% of 3504 decks
4 decks
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