They "remember" any counters they had on them, any choices made when they first came into play, and whether they were tapped or untapped when they left play
The set does have a few new mechanics to wrestle with, though none are particularly challenging
She was able to keep up with the evolving board state, and we were able to successfully play a second, un-guided game after finishing the tutorial
Any damage the Obliterator is dealt, be it from combat or removal spells, translates into sacrifices your opponents must make
Despite this, most of the cards in Spideys Spectacular Showdown Scene Box are pretty meh
Trinisphere represents the nuclear option when it comes to taxing cheap spells