Returning cards from the inkwell is mostly a downside but can work out in your favor
White White is going to be absolutely rammed with Moogles
When two cards (for example, Fang, Fearless l'Cie and Vanille, Cheerful l'Cie) are melded, the result is a single permanent (in this case, Ragnarok, Divine Deliverance) that's represented by two cards
Letting you move counters around each turn will certainly open him up for some fun interactions (Luminous Broodmoth, perhaps?)
Having said this, we can already see a scenario where detrimental counters (such a finality) can be mitigated in impact through Tiduss first ability
There's also the nine-booster Final Fantasy bundle (plus bonus cards) for $89.92, despite still being available to preorder for $70 at Walmart, alongside single sealed boosters that have risen from $7.99 to $9.19 as well