Vampires often care about lifegain , with lifelink and similar abilities intermingling flavorfully with the idea of drinking a victims blood, literally gaining strength from dealing damage
Considering how much larger Magic print runs are today than they were in the 90s, that means there'll be relatively few copies in circulation, and fewer still will have survived in decent condition
So if the planeswalkers add useful effects to the mix, I think its fine flavor-wise
Sure, its not The One Ring, but the Gold Chocobo is going to be THE pull of this set
Cave-InCave-In is an oft-forgotten card out of Mercadian Masques , and its status is fairly well deserved
However, its [Counter] effect cannot be used to defend your Characters, so be sure to switch between using it and "OP01-029 Radical Beam!!" as appropriate.