Yeah, for me, it’s never really about a type-centric team, when evaluating mythics.
What I’m looking for in a mythic is:
Can this help me wipe opponents quickly (either thanks to low mana cost, high damage output, or both)? (Ironhawk, Euryali, etc…)
Can this help me avoid losing to status effects in Wars; ie—does it allow me board control? (Sycorax, etc…)
Does it do a unique thing that makes some aspect of the game trivial-ish? (Irongut for delves, Megavore for insta-killing and armor-eliminating, etc…)
Does this thing counter something I face often; ie — can it reliably kill Zuul’goth teams, Queen Bee teams, Doomed Book teams, etc… (ironically, Zuul’ is my example here, as racing Zuuls is usually what I decide to do in this here sitch-ee-ation )
If I play it correctly, can I reliably maintain my turn? Can the AI do the same? (Shahbanu, The Gray King, to varying degrees of success, obvee)
And maybe a few other incidentals.
I don’t really teambuild anymore except in the Wars environment — I have the Ironhawk team I need to wipe easy content, the Zuul team I need for Explore 12, all the delves are done, so Unless something comes along that’s better-enough to warrant changing up those go-tos (unlikely — they’re all pretty efficient as-is), then I don’t see myself needing a mythic for any of that.
What I need a mythic for is if I face a team on yellow day that has Zuul’goth and — uh-oh — I can’t bring my own. So what do I use to kill him?
I need counter mythics. I need my yellow-day Zuul’goths. I need my “Can’t be Frozens and can actually Do Something”.
Does she fit the bill? Hard to say. I think she maybe checks three of those boxes — will need to check. I just figure she’s worth the check because she’s a Gray King that can’t be frozen, minus the mana drain and silence (which are major draws, to be sure, so maybe that alone is a reason she’ll never make the cut, as providing my allies reflect isn’t as useful as shutting down the opponent).