if Ashling Command is in your hand, or if it's in your graveyard, plus an additional in colored mana that is at least three different colors available.
Steps
If
Ashling's Command is in your graveyard, activate
Horde of Notions by paying , causing you to cast
Ashling's Command from your graveyard without paying its mana cost. Otherwise, cast
Ashling's Command by paying .
Resolve
Ashling's Command, creating two Treasure tokens and choosing any other mode.
Activate the Treasures by tapping and sacrificing them, adding three mana in each of two different colors.
Repeat.
Notes
You can make tokens of
Nyxbloom Ancient using
Ashling's Command to make more mana each iteration, but the combo can sustain itself with just one
Nyxbloom Ancient.
Results
Infinite artifact ETB.
Infinite artifact LTB.
Infinite artifact sacrifice triggers.
Infinite artifact tokens.
Infinite creature ETB.
Infinite Treasure tokens.
Infinite card draw for any number of players.
Infinite colored mana.
Infinite creature tokens.
Infinite draw triggers for any number of players.
Infinite magecraft triggers.
Infinite storm count.
Infinite token copies of Elementals you control.
Metadata
Bracket tag
SpicyBracket 3-4+
Probably 3 or 4, but hard to classify
1
2
3
4
5
1 · Exhibition5 · cEDH
Bracket tags are estimated from the cards and results of each combo, as a guideline rather than a strict classification.