While we're still battling cost hikes here, it's less wince-inducing than I've seen elsewhere
This is one of those Pokmon that was made for a Team Rocket set
Activate only if there are four or more card types among cards in your graveyard
The most likely reasons are if it's sacrificed, if it's legendary and another legendary permanent with the same name is controlled by the same player, if it's a planeswalker and another planeswalker with the same subtype is controlled by the same player, if it's a creature with toughness 0 or less, or if it's an Aura that's either unattached or attached to something illegal
From the back of the sleeves, we have full version names for Sisu Divine Water Dragon by Grace Tran and Mulan Soldier in Training by Michael Cookie Niewiedomy
This gives you an edge: you can lurk a little bit, and learn how best to evaluate these cards