serenity deck yugioh YU-GI-OH! - Caam, of Gusto (HA05-EN041) - Hidden Arsenal 5-1st Edition Serenity Wheeler | Yu-Gi-Oh! Wiki

There's also Gwenom, which is basically classic card Bolas' Citadel but in the command zone

Since you're going for the Grixis controlly type, but with some situational ways to hit your opponent, mostly when his hand is already empty, you might want Lim-Dul's Vault to filter your next few turns

Also of note is the Dragon Rulers are finally forbidden, putting an end to their run

Similar to SM99, Lumra pushes out archetypes that arent tailored to interacting with it, so it was banned to keep the format diverse in archetypes as well as decks

Liliana of the Dark Realms isn't exactly a staple powerhouse in any format, but that hasn't stopped her TCGPlayer listing from showing a $259.27 market price at time of writing