Yzma, Scary Beyond All Reasons Cruel Irony ability means that when shes played, you choose a character on the table to shuffle into their players deck, before that player draws two cards
In an absolutely genius move, they have based the decks on the four most popular entries in the Final Fantasy series
Tigger, In the Crows Nest Enchanted Rare, 215/204 Lorcana character cards can have a variety of different subtypes in addition to being either Storyborn, Dreamborn, or Floodborn
Eden, Seat of the Sanctum Having a land that does something later in the game is a useful tool to mitigate flood, so I doubt Eden, Seat of the Sanctum is utterly unplayable
That way, youll be able to set up a pseudo-Overrun in no time