Then you can -7 as an ultimate to have your foe exile X cards from their library where X is your exiled mana cost, so that's a win-con over time
I think the best fit for Majestic Myriarch would be a Samut, Voice of Dissent deck that plays like Odric, Lunarch Marshal, slapping your token army with as many keywords you can muster and smashing face
Arise, great one, and cleanse the world of our enemies! Illustrated by Piotr Dura Standard Not Legal Alchemy Not Legal Pioneer Not Legal Historic Not Legal Modern Not Legal Brawl Not Legal Legacy Legal Comp
On the other end of the price range, the $2,500 packs, the ripper is guaranteed a card valued at $850 at the lowest, but the priciest card they could pull is worth $82,166
Plus, ya know, plural
Its a 0/0 Goat Hydra for XG which as you expect will enter the battlefield with X +1/+1 counters