Overlord of the Mistmoors I have grown to realize the issue with the Selesnya Turtle list I discuss here is that Storm the Festival is not particularly good in it
Putting them on a creature that can block reasonably well, making the card draw ability cost zero mana to activate, and stapling on inevitability
(10/4/2019) If you copy a spell that has an adamant ability, no mana was spent to cast the copy at all, so that ability won't apply.
It also doesn't hurt that she plays so well with the lands you can easily fit in a Mono-White deck in Fountainport, Mirrex, and the new land Dalkovan Encampment
All this said it is still a cheap, hefty burn spell with lots of added value and one of the best things to have under an isochron sceptre
Horror tribal: Boost your creatures and gain bonuses from their attacks