Tazri, Stalwart Survivor + Duergar Mine-Captain + Agatha of the Vile Cauldron

Tazri, Stalwart Survivor

Duergar Mine-Captain

Agatha of the Vile Cauldron

How it works

1. Activate Duergar Mine-Captain by tapping it, adding R/W that can only be spent to activate abilities.
2. Activate Duergar Mine-Captain by paying R/W and untapping it, giving attacking creatures +1/+0 until end of turn.
3. Repeat.

This clever loop turns Duergar Mine-Captain into an infinite power engine by constantly untapping itself with its own ability, fueled entirely by the hybrid mana it generates upon tapping. The presence of Tazri, Stalwart Survivor is crucial here, granting that mana-producing tap ability to Duergar Mine-Captain in the first place while also giving you a powerful way to mill and refill your hand if you need to dig deeper. Meanwhile, Agatha of the Vile Cauldron holds the whole machinery together with her passive cost reduction, ensuring you always have the right amount of mana efficiency to keep the untap cycle spinning endlessly.