Just look at this flavour text to the red-aligned Urabrask the Hidden
For fans of Magic the Gathering history, this shadowy beast is a reminder of the games earliest days, when powerful creatures and creative deck-building shaped the foundation of MTG gameplay
Enhances deck-building with iconic cards, promoting strategic gameplay and customization
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
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