Revenant Recon

Revenant Recon is a 100-card Commander precon from Murders at Karlov Manor Commander, released February 9, 2024. It is led by Mirko, Obsessive Theorist, a Dimir commander.

Mirko, Obsessive Theorist

Flying, vigilance
Whenever you surveil, put a +1/+1 counter on Mirko.
At the beginning of your end step, you may return target creature card with power less than Mirko's from your graveyard to the battlefield with a finality counter on it. (If it would die, exile it instead.)

The list runs 37 lands and 29 creatures, and its nonland cards average 3.33 mana. At today's TCGplayer prices the whole deck's cards come to about $138.91, and the most valuable is Necromancy at $17.77.