Akiri, Line-Slinger + Chthonian Nightmare + Ruthless Technomancer

Exhibition

Decks

How it works

Cast Ruthless Technomancer by paying .
When Ruthless Technomancer enters the battlefield, it triggers, causing you to sacrifice Akiri and create at least eight Treasure tokens.
Activate seven Treasures by tapping and sacrificing them, adding .
Activate Ruthless Technomancer by paying and sacrificing a Treasure, returning Akiri from your graveyard to the battlefield.
Cast Chthonian Nightmare by paying .
When Chthonian Nightmare enters the battlefield, it triggers, causing you to get .
Activate Chthonian Nightmare by paying an amount of , sacrificing Ruthless Technomancer, and returning Chthonian Nightmare from the battlefield to your hand, returning a creature with mana value 2 or less from your graveyard to the battlefield.
Cast Chthonian Nightmare by paying .
When Chthonian Nightmare enters the battlefield, it triggers, causing you to get .
Activate Chthonian Nightmare by paying , sacrificing the creature returned in step 7, and eturning Chthonian Nightmare from the battlefield to your hand, returning Ruthless Technomancer from your graveyard to the battlefield.
Repeat from step 2.

In which brackets is this combo allowed, per Spellbook's Exhibition tier?

1–2 · Exhibition & Core

Allowed in this bracket.

3 · Upgraded

Allowed in this bracket.

4–5 · Optimized & cEDH

All combos are allowed.