As you already know, artifacts of power lie scattered throughout the accursed, mist-shrouded expanse. Among them, Mercurial Gear shines the brightest, and you will struggle to find its like in all of Teleria - take a look at the infographic below, and see for yourself!

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Some mechanical details about this set:

• Bosses ignore Total Guard buff. Therefore, the PvE will remain challenging even with this set, outside of helping players who struggle with waves.
• Total Guard buff will prevent debuff placement and most other effects, regardless of “hit” condition on the skill. Also, if the skill itself does not have a “hit” as part of the skill, it will not remove Total Guard buff stacks.
• Any "hit" will remove a stack of Total Guard. So every hit of the multi-hit skill, damage from “Ally protection” buff, or even a hit of 0 damage will remove a stack. However, hits from Masteries, Blessing, Relics, and HP burn on another champion won't.
• The 9-piece set bonus will return 1 stack of the Total Guard every turn.
• Total Guard buff does not prevent “Increase skill cooldown” effects.

This set is meant to be one of the more powerful sets in the game, but at the same time, somewhat easily removed with AoE multihit skills. 

While the Mercurial set is mostly PvP-oriented, it should also make wave content and features like Cursed City a bit easier, and help players overcome some of the bottlenecks they may encounter in other Game modes.