Unfortunately it's just boring, the deck-building mechanics are boring, the story is nonsensical, and one playthrough is a chore, nevermind replayability.
It's a nonsense game but that's the point. There's actually a bit of fun to be had here, more than the stars would suggest, but it also gave me a headache after playing for an hour.
I know people say the endgame is fun, but up to at least level 35 or so (where I quit) the game is unbelievably boring. So many quests of "hand this thing to this person on the other side of the world then come back to me".