Ban Guardian Spirit and Bad Juju from PVP. Period.
Not because the spells themselves are that overpowered, but when gear setups exist to specifically take advantage of these 2 spells, it ruins the game for the players that don't create a strategy to win using just these cards. (Meaning, the rest of us).
Reasons: I've seen Guardian Spirit heal for 4200+ without a critical. The equivalent of 250% incoming healing in gear makes even a Pixie do 1300+ without Sanctuary. And Life wizards have used the Angel strategy in ranked to soar to ratings of over 1700. (Bad Juju to over 2000). When an Angel player dies under Guardian, not only can they come back with 3000+ , but all the weaknesses, traps, and infects that you spent so much time placing on them are removed. Your weaknesses and traps, however, are still on.
As Reshuffle is no longer infinite, eventually you will either run out of cards trying to defeat them, or you will be one hit with a max feint / trap stack Caterpillar. Whichever comes first. It's that simple. And when you die, you won't come back again.
Jade Juju spam speaks for itself. I don't think there is a single person on here that likes Bad Juju spam in PVP. Not one. Yes, let's deal with 81% resist and a 90% weakness, nearly every turn. Juju, Juju, Empower, Juju, Juju, Empower, Sacrifice, Empower, Juju, Juju. Sorry but even a four-year-old can win with that strategy, if strategy it can indeed be called.
Let's face it. Guardian Spirit needs to go. Same for Bad Juju. Not too devastating in and of themselves, but combine that with Jade gear and the advantage is too great to ignore.
Once enough people stand together on this front, changes will happen. But nothing will be done if nobody says anything.
without a critical. The equivalent of 250% incoming healing in gear makes even a Pixie do 1300+ 
(Level 110)