Progenitor Mimic + Archaeomancer + Notorious Throng

Progenitor Mimic

Archaeomancer

Notorious Throng

How it works

1. Deal combat damage to an opponent using a Rogue.
2. Cast Notorious Throng for its prowl cost by paying 5, causing you to take an extra turn after this one.
3. At the beginning of your next upkeep, Progenitor Mimic triggers, creating a token copy of Archaeomancer
4. When the Archaeomancer token enters the battlefield, it triggers, returning Notorious Throng from your graveyard to your hand.
5. Repeat.

This brilliant loop locks down the game by chaining infinite extra turns through a self-sustaining engine. It all begins when you cast Notorious Throng for its prowl cost, taking an extra turn and putting the spell into your graveyard. As you move to your next upkeep, Progenitor Mimic's delayed trigger creates a fresh token copy of Archaeomancer. When that Archaeomancer token enters the battlefield, its triggered ability immediately returns the original Notorious Throng from your graveyard back to your hand, ready to be recast on your new extra turn to repeat the cycle indefinitely.