Megaton's Fate + Dualcaster Mage + Lilysplash Mentor

Megaton's Fate

Dualcaster Mage

Lilysplash Mentor

How it works

1. Cast Megaton's Fate by paying 5, targeting the indestructible artifact.
2. Holding priority, activate Lilysplash Mentor by paying 1, blinking Dualcaster Mage.
3. When Dualcaster Mage enters the battlefield, it triggers, copying Megaton's Fate, with the copy targeting the indestructible artifact.
4. Resolve the copy of Megaton's Fate, failing to destroy the artifact due to it being indestructible, and creating four Treasure tokens.
5. Activate three Treasure tokens by tapping and sacrificing them, adding 1.
6. Repeat from step 2.

This clever engine harnesses the explosive potential of Megaton's Fate by looping its artifact-destroying mode to continually mint a surplus of Treasure tokens. By channeling the mana generated from those treasures into the activation cost of Lilysplash Mentor, you can repeatedly exile and return Dualcaster Mage to the battlefield. Every single time Dualcaster Mage flickers back in, its triggered ability lets you copy the original Megaton's Fate on the stack, ensuring an endless cascade of mana, tokens, and enter-the-battlefield triggers.