Executor the Ex Foedere banner

Executor the Ex Foedere can be tricky to evaluate. He has a ton of potential between his super strong self sustain and incredible theoretical DPS which is True-AOE, high-hit Physical, and from a Melee tile - all very valuable attributes. But those benefits come with hefty drawbacks which complicate the overall picture. He has a high Attack Recovery cost, inconsistent RNG, and can't be healed. Those are all potentially big problems! However, while that overall assessment is muddy, his Masteries are actually very straightforward. His S3 is his standout skill because it has by far the best damage potential and sustain, and its Masteries are extremely important to effectively using him. Accordingly, his S3 Masteries are a high priority, although a touch lower than the very top of the meta still. In addition to above average DPS increases, the biggest drawback of his S3 is the absurdly high Attack Recovery cost. At S3M3 it's still a painful 24 SP¹, but that's a vast improvement over the 30 SP (note 1) at SL7. Executor2 is a unit who oftentimes can “feel bad” to use, but he will feel much worse at SL7 than at S3M3. Also note that S3 has a breakpoint at M1. The sustain during the skill