X's best builds inhelp him keep control of the field, so his enemies can't buff one another. Whenever he gets rid of an enemy buff, he'll cast Silence, preventing them from buffing, debuffing, healing, or countering. Later on, with Insight 3, he can prevent enemies from gaining Moxie for a round.
X is a 5-Star Intellect character who works well in boss battles and rarely experiences a negative Afflatus effect due to the rarity of the Intellect Afflatus.
X takes some time to build, as the debuffs in his Incantations don't apply until you start leveling them up. Coffee Or Tea can dispel Counters while Anode And Cathode gets rid of positive statuses and stat boosts. His Ultimate,, gets rid of 2 Moxie for each enemy. X works well in a team requiring weakened enemies and with a Psychube that boosts his DMG.
X is tagged as Dispeller, DPS, and Control. His dispel and control abilities grow stronger the more you level him up, but his DPS skills could use some work. If you struggle to get high-ranking Psychubes, you'll probably want to save them for your main DPS characters. However, if you've got the Psychubes to spare, there are four top-tier options that can greatly improve X's DPS capabilities.
The best Psychube available for X as of 's global launch has to be Blasphemer of Night. This Psychube plays with X's Insight passives and requires him to be properly leveled up. If X can give his enemies Silence and Disconcert (or Silence and a negative status from a member of his team), his attacks against those enemies get up to a 24% DMG bonus. He can also get an 18% Incantation Might bonus, encouraging you to apply Silence as much as possible.
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