Sorry you had a bad time in PvP, But getting around mana burn is something you have to deal with, it was implemented into the game like this and it will stay this way. If you know the enemy is going to use mana burn multiple times, try and use your pips before he lands it on you, that way he loses his card, his blades and such and does no damage.
Mana burn shouldn't be removed from pvp but it shouldn't take four of your pips regardless of whether or not those pips are power pips. Ex. if you have four power pips it should take away two of them instead of all four. Same goes for Lord of Winter.
I think the subject says it all... all balance do is spam mana burn
Let's see, Myth spams shatter and Earth,..... let'sl stop those. Life spams a guardian Spirit each time one is taken away, lets dis those. Fire spams efreet and Power Link, those gotta go too. Ice spams Frost bite, that's gotta go. Storm spams it's 2 pips spells, they gotta go too.....
Or, maybe we can just learn how to work around these spells, just like we need to learn and adjust to the Shadow Shrike spell....
KI must have thought of all the ways around it, before it's release, right.