If it has regenerate itself, that could probably be changed to ": The next time Skull Hammer would be destroyed, instead it isn't." Or more likely, ": Skull Hammer gains indestructible until end of turn." I assume it's supposed to interact with the "Whenever a Skeleton regenerates" mechanics, but the only card that could care about a non-creature Skeleton regenerating also grants regeneration to all Skeletons
Mewtwo EX is the embodiment of that and, if there wasnt an easy way to give it Energy, it would be strong, no doubt, but not as strong as it currently is
Just look at this flavour text to the red-aligned Urabrask the Hidden
Flavor Text Laissez-moi vous dire la bonne aventure
I did a little research into the process beforehand but was greeted with conflicting information and 30min long Youtube videos so I figured Id summarize my experience, give some tips and relay some information I was told from the associate (Which may or may not be true)
How Do You Know When to Use a Board Wipe in Multiplayer