The champion, Idiris, is gaining a Heavy Attack  ability due to the fact that after she runs out of Aura her primary offensive ability is useless. This will help mitigate her weaknesses during late game.
First printings of this card said, ". . . can only be resurrected if another summon has been killed this turn." and " . . . Place Skeleton King on a spot where a summon has been killed this turn . . .". All the instances of the word "turn" are now "round".
Skeleton King is getting its second errata in two sets. Its Resurrect ability is now becoming a Resurrect Beckon ability; it functions the exact same but is now a beckon ability like every other summon.