The key to winning at pvp... is to let your death wizard die.
What I mean is find out what 33% of you health is let the enemy wizard damage you so you get to 33 percent of your total health or less.
Control the amount of damage you take using juju (usually to counter a big hit or to purposefully bring your life down to 33% or lower) and volcanic shield.
Make sure to use stun block early in the match.
Use death treasure blades and normal death blades until you can shadow shrike mixing in normal and enchanted death traps help too.
Keep a moderate amount of khrulhu in your deck.
Enchant all damage spells with epic or extraordinary and your critical should hit for around 15000 damage with 2 blades and a trap.
Always have shrike on when you hit and always tree the turn you know the enemy is going to put you at 33% health.
If fully prepped to hit use juju to put yourself at 33% health.