Agatha of the Vile Cauldron + Silvanus's Invoker + Zendikar Resurgent

Agatha of the Vile Cauldron

Silvanus's Invoker

Zendikar Resurgent

How it works

1. Activate a land by tapping it, adding 1.
2. Zendikar Resurgent triggers, adding 1.
3. Activate Silvanus's Invoker by paying 1, untapping the land and causing it to become an 8/8 Elemental with trample and haste in addition to its other types until end of turn.
4. Repeat.

This delightful loop transforms a humble land into a self-sustaining engine by cleverly manipulating activation costs and mana production. With Agatha of the Vile Cauldron reducing the cost of Silvanus's Invoker's ability down to just one mana, tapping your land for mana yields enough funds to immediately untap it and repeat the process. Zendikar Resurgent serves as the crucial amplifier, doubling your land's output so that each activation cycle generates a net surplus of mana.