Multiattack. The champion makes two Arcane Burst attacks or makes one Arcane Burst attack and uses Spellcasting.

Arcane Burst. Melee or Ranged Spell Attack: +5 to hit, reach 5 ft. or range 120 ft., one target. Hit: 8 (1d10 + 3) force damage.

Aura of Deception (1/Day). The champion emits an aura of ghostly illusions that fills a 10-foot-radius sphere centered on itself. While this aura is active, creatures have disadvantage on attack rolls against the champion and any of the champion's allies that are in the aura. The aura moves with the champion and lasts for 1 minute, until the champion has the incapacitated condition, or until the champion uses another bonus action to end the aura.