Elite Arcanist + Chakram Retriever + Pact of the Titan + Pandemonium

Elite Arcanist

Chakram Retriever

Pact of the Titan

Pandemonium

How it works

1. Activate Elite Arcanist by paying 0 and tapping it, casting a copy of Pact of the Titan without paying its mana cost.
2. Chakram Retriever triggers, untapping Elite Arcanist.
3. Resolve Pact of the Titan, creating a 4/4 Giant creature token.When the Giant enters the battlefield, Pandemonium triggers, dealing damage equal to the Giant's power to any target.
4. Repeat.

This clever loop turns Elite Arcanist into a zero-cost spell engine by exalting Pact of the Titan, letting you repeatedly copy and cast the free instant without paying its mana cost. Every time you cast that spell on your turn, Chakram Retriever springs to life with its passive untap trigger, refreshing Elite Arcanist so the process can begin anew. Meanwhile, Pandemonium capitalizes on the resulting procession of Giant tokens by weaponizing their entry, converting your infinite creature generation directly into lethal damage to any target.