Zndrsplt can draw players a lot of cards, while Okaun has the chance of taking out players in a single hit if his controller wins enough coin flips
This seems counter -intuitive (insert smiley emoji!), but you could imagine it as a desperate play to stop a Sauroform Hybrid from getting too large
Aggravated Assault Ahn-Crop Champion Akki Battle Squad Aurelia, the Warleader Aurelia, the Warleader Awakening Battle Cry Bear Umbra Beledros Witherbloom Benefactor's Draught Blinkmoth Infusion Breaking Wave Breath of Fury Bumi, Unleashed Call to Glory Combat Celebrant Curse of Bounty Dramatic Reversal Drumbellower Dryad's Caress Faces of the Past Fiery Gambit Flying Crane Technique Framed
Like all beholders, Xanathar is a paranoid tyrant that charms and bullies its minions into servitude
The Black flashbacking four-cost sorcery will draw two, discard one and then make X tapped 2/2 dorks equal to the number of cards that went there this turn
So this will be a thinking aloud, chewing the fat, rubber ducking, showing my working out post