You can use inner or outer sleeves if youd prefer, but penny sleeves do the job absolutely fine
Six mana is quite a lot, but I can see Ysthola fitting well into both flicker decks and decks that mess with upkeeps and endsteps
But they wont last as long as a good Ultimate Guard, Dragon Shield, or other brands
Passive abilities (that dont need you to exert the card) can be used on the first turn they are played
If you check out the Iconic Minnie card from earlier in this list, youll see whos showering Mickey with so much affection, as the two Iconic cards form a single piece of artwork when placed together
Black Colorful Chocobo are printed in Japanese only, Neon Colorful Chocobos are printed in English only, both can be found in Collector Boosters of any language