Paying nothing for zombies is never not useful, where as if you dont have a ton of ETB triggers then Necroduality might be less of an auto-run
That being said it does have some downsides as some cards can really punish you for using abilities, drawing or discarding
Final Fantasy is both a design and sales dynamo for Wizards of the Coast , and with cards like these amazing Summons, its no wonder that the set is already Magics best-selling release of all time
Its not optimal, but if need be, Shura can also become an attacker with a quick Two Hundred Million Volts Amaru event card
Dartrix is a useful addition in United Wings decks, offering extra damage potential, though its collector value may be limited due to its common rarity
Also to answer the OPs question, I store my PSA cards in a graded shoebox