While its definitely helpful to have access to the rarer cards in a deck, its also fully possible to play a competitive deck without Legendary cards and just a few Rare and Super Rare
$0.49 Vincent's Limit Break Final Fantasy $0.49 Summon: Anima Final Fantasy $0.49 Evil Reawakened Final Fantasy $0.49 Barret Wallace Final Fantasy $0.49 Reno and Rude Final Fantasy $0.79 Jill, Shiva's Dominant Final Fantasy $1.49 Zenos yae Galvus Final Fantasy $0.79 Overkill Final Fantasy $0.49 Gilgamesh, Master-at-Arms Final Fantasy $0.49 Lion Heart Final Fantasy $0.49 Phantom Train Final Fantasy $1.49 Vincent Valentine Final Fantasy 0 results found
The first new addition is "Epic" rarity
Ability costs can include ink (paid by exerting cards in your inkwell), exerted cards (paid by, well, exerting cards) or something else explained on the card itself
2 rare, super rare, or legendary cards
Final Fantasy VIs Terra is the first well be looking at, and it really gets the Strixhaven bells ringing with how much text it brings to the table