Agatha's Soul Cauldron + Myojin of Cryptic Dreams + Mondrak, Glory Dominus

Agatha's Soul Cauldron

Myojin of Cryptic Dreams

Mondrak, Glory Dominus

How it works

1. Cast the artifact spell or creature spell with haste by paying its mana cost.
2. Holding priority, activate Mondrak using Myojin of Cryptic Dreams' ability by removing an indestructible counter from it, copying the artifact or creature spell three times.
3. Resolve the three artifact or creature spell copies, creating six token copies of the artifact or creature.
4. Activate three tokens by tapping them, adding at least 3.
5. Activate Mondrak by paying 3 and sacrificing two of the tokens, putting an indestructible counter on it.
6. Repeat from step 2.
7. Once you have infinite tokens and mana, you may cast any other artifact and/or creature cards in your hand, and use Mondrak to get infinite copies of them.

This engine relies on combining graveyard utility, permanent duplication, and token doubling into a relentless recursion loop. By feeding a creature card into Agatha's Soul Cauldron, you grant its activated abilities to your other creatures with +1/+1 counters—which allows Myojin of Cryptic Dreams to gain that creature's tap abilities or lets you build toward copying spells. Meanwhile, Mondrak, Glory Dominus sits ready as a crucial multiplier, doubling every token generated by Myojin of Cryptic Dreams' spell-copying trigger so you rapidly scale your board state.