Given her effective cost of three mana, this might see some play in Standard, but the exiling part of it creates a problem that other resurrection effects are unable to get the cards back for older formats or Commander
This makes it very convenient for black creature decks, since Siege Rhino
For each of those slots, youve got about a 15% chance to hit a mythic
Getting the tokens takes extra work, but they scale much faster, and its not like its hard to cast two spells in a turn
In this format, the Lasting Fayth Adventure could create a decently statted threat, which isnt bad when top decking a land
Right now, theres no guarantee this dip will happen, but it certainly seems likely