Horde of Notions + Ashling's Command + Xorn

Horde of Notions

Ashling's Command

Xorn

How it works

1. If Ashling's Command is in your hand, cast it by paying 3. If Ashling's Command is in your graveyard, activate Horde of Notions by paying , casting Ashling's Command from your graveyard without paying its mana cost.
2. Resolve Ashling's Command, creating a token copy of Xorn, and then creating four Treasure tokens.
3. Activate four Treasure tokens by tapping and sacrificing them, adding four mana of four different colors.
4. Activate Horde of Notions by paying , casting Ashling's Command from your graveyard without paying its mana cost.
5. Resolve Ashling's Command, creating a token copy of Xorn, and then creating a number of Treasure tokens equal to two plus the number of Xorns you control.
6. Activate five Treasures by tapping and sacrificing them, adding .
7. Repeat from step 4.

This looping marvel hinges on Horde of Notions acting as an engine to repeatedly cast Ashling's Command from the graveyard for its five-color ability cost. The magic truly scales thanks to Xorn, whose replacement effect turns every batch of Treasures created by Ashling's Command into an ever-growing surplus of wealth. With each iteration, the token copies of Xorn accumulate and amplify your Treasure generation until you are producing more than enough mana to feed Horde of Notions indefinitely.