Death is the worst? I don't agree. I lose to Death a lot. They put all the attack spells on you and then hit you with the Skeletal Pirate or the other one where it bubbles up under your feet then hits you 1k+.
Do not base best dueling schools of of this pvp season. All thos einsanely high ranks are form expoliting a bug involving rank. So those people are all from group duels and people who used the bug to defeat novices and get mad rank for it. That top 100 list means nothing.