We've seen two Secrets of Strixhaven cards with the ability so far: Arcane Omens and Archaic's Agony - both five mana Sorceries, both incredibly garbage
20pcs Clear PP A6 Card Sleeves for 6 Ring Binder
You don't need to be built around her with legends or pestilence effects for her to be a very solid option, just having a merfolk looter that prevents you from early attacks by being a 1/3 would legitimately be enough, but then you also get a late game threat and some extra free looting when you cast your commander
You dont have to invest any cards, just keep the ability open, until you want to play your Demon Beast later
1 Slither Wing is an Amazing Single-Prize Attacker First Printing: Paradox Rift Ancient decks have many reliable ex Pokmon to attack with, but they usually need a few turns to set up an optimal board state
You do not need previously released cards to play cards from this set