In game, Charlotte Pudding allows you to check the top four cards of your deck when you play her
From cards printed in minor releases that never saw a release again, to cards that are exclusive to digital games , to Secret Lair Drops that have cards that have never seen a Universes Within printing
Anything that reduces the generic mana costs of creature spells or triggers upon casting one can work extremely well with disguise or morph cards, since they always cost three mana to cast
Teferi, Hero of Dominaria [Best Control Finisher with Built-In Card Draw] Teferi, Hero of Dominaria is the gold standard for control finishers, perfectly representing why White/Blue is one of the most powerful MTG color combinations for long-game strategies
Easy Upgrades As far as upgrades go, you can probably focus on replacing big creatures with smaller rogues to lead early games