Doubling life gain is potentially important for a deck that wants to gain a lot of life, but gaining a lot of life is generally not that hard
As for item cards, theres a whole treasure trove of Keyblades to pick from that I and many other fans of the series would spend money on in a heartbeat
A four-mana 4/4 is pretty respectable in Red - even in Commander - and that's all the better thanks to the color's recent dipping into trying out mana dorks
3 Gramma Tala: Spirit Of The Ocean Card Number 143/204, Sapphire Ink Gramma Tala: Spirit of the Ocean will absolutely be a highly coveted and useful card for Sapphire ink decks
Also, for this set, when they refer to Booster Fun, they mean one of the following treatments: Artist Rare, Woodblock Rare, Borderless Character, Borderless Lands, and EA Legendary Cards