Atsushi, the Blazing Sky + Splinter Twin + Clock of Omens + Memnarch

Atsushi, the Blazing Sky

Splinter Twin

Clock of Omens

Memnarch

How it works

1. Turn Atsushi into an artifact using Memnarch.
2. Activate Atsushi by tapping it, creating a token copy of it with haste.
3. Put the Atsushi token into your graveyard due to the legend rule.
4. When the Atsushi token dies, it triggers, creating three Treasure tokens.
5. Activate Clock of Omens by tapping two Treasures, untapping Atsushi.
6. Repeat from step 2.

This intricate engine starts by using Memnarch to turn Atsushi, the Blazing Sky into an artifact, making it a valid target for its own duplication needs. By enchanting Atsushi with Splinter Twin, you gain the ability to tap it and manufacture hasty token copies, which immediately fall to the legend rule and send them to the graveyard. Each time an Atsushi token perishes, its death trigger rewards you with three Treasure tokens. You then feed those very Treasures to Clock of Omens to untap your original Atsushi, looping the entire process to generate infinite mana, death triggers, and even exile your entire library with the option to play those cards.