Oversoul
The Tentacled One
But some of what might be termed boundaries HAVE been surpassed. The best example I can think of is the Counterspell one. Mana Drain was printed in a later set. The quality of a straight counter with UU for the cost was surpassed in Legends.DarthFerret said:What I meant, cause I know I was not very clear, is that the boundries that were set by "first edition" have never been surpased. This is a good thing, because people like me who do not buy very many of the newer cards, still have a really good chance in a casual magic game. (Not so much in tournaments, because it is hard to build a deck that is legal to play, consisting entirely of older card stock.)
Most other examples I can think of do have some technicality. Morphling is better than Air Elemental--but if you have no mana available, then Air Elemental is of course better.
Frozen Shade is strictly worse than Looming Shade. There's another example. Frozen Shade was never one of the truly feared cards from the original set, but I guess if you define "boundary" as "that which has not ever been surpassed" then none of the boundaries will be surpassed, although you would be using a tautology...