Progenitor Mimic | Notorious Throng

Cards

Progenitor Mimic on the battlefield as a copy of
Archaeomancer You control at least one Rogue that does not have summoning sickness and cannot be blocked by an opponent.

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

This combo has been estimated to be Ruthless (Bracket 4+).