Idk if this happened in real Vanilla, but there is a big problem as it seems with new PvP "meta" since Mages in BGs, which make a big part of every BG instance (since Mage pop is overboard in general), nearly never cast anything except doing just one thing: insta spam Arcane Explosion.
This is a very problematic issue, cause, unlike with Fire or Frost, there is hardly any Arcane resistance items in the game. For example, there is no Engineering reflector for Arcane spells (unlike for Frost, Fire or Shadow), there is no Paladin aura vs. Arcane magic, etc. Only 2 potions, and that's all.
It is even harder to deal with multiple Mages spamming Arc Explosion since it's instant cast, so there is little you can do. At the moment, honestly, I don't think how a BG group can counteract vs Mages heavy enemy team focused on Arc Explosion spam. Its becoming bigger and bigger issue, Ive seen number of games lost just because of this stupid ability.
Anyone can advise a way to counteract the stupid 1-button spam ability except the pots? What could be done to fight that plague in BGs? I would welcome any ideas, because this is indeed very irritating to face game after game, especially playing a Paladin.