Assault Intercessor can take huge chunks out of opposing life totals when combined with the right cards, whether thats dedicated board wipes, a flurry of targeted removal, or just straight-up actual Massacre Wurm
Fine to play as good all round utility filler come removal but not something you can overly consider as a threat which is a very rare thing to be able to say about a planeswalker
Master Ball holos may not be as hard to come by as Illustration Rare EX cards, but theyre still rare enough to garner price tags like this one
So much so that some players have started to use the rules for the mobile game while playing the physical version
Either way, Mirrym, Sentinel Wurm is an amazing Dragon card, and capable of taking down Commander pods at the helm
You can give a creature you plan to sacrifice a regeneration shield, it just wont do anything since regeneration only protects from lethal damage or destruction