Spellslinger as a theme is quite tiresome and overdone, though thats most commanders for spellslinger decks seem to promote the same gameplay
As long as at least one creature card was discarded this way, you'll create a Moogle token, and as long as at least one noncreature card was discarded this way, you'll put a +1/+1 counter on each Moogle you control
The other thing to consider is, if you already have 5 characters on board, you probably don't need Mirabel
You'll also be playing many cards that drain lore from your opponent's point total
New Double-Rainbow Serialized LotR Cards There are two new types of serialized cards in these boosters, borderless poster cards and Realms and Relics cards
Together, the Starter Deck pair for Ursula's Return represent a nice balance for each kind of player, and look like a nice investment to get started with this new set