I dont think your average deck will care about playing Aerith Rescue Mission, but the go-wide deck in green/white should be happy with it
Disney Lorcana has released a statement that it will never have mechanically unique promo cards, so everything on this card other than the D23 Expo stamp is the same as what players can get in a booster pack
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
All of these other rare characters, including Robin Hood (I love Robin Hood cards in Lorcana , he's always running away with tons of Lore), really benefit hugely from damaged opponent characters
This card, like many on our list, offers Shift