That's because he got the DODGE ability from Astral Entity.

DODGE + FLYING ability can be a combination to reduce your opponent's accuracy. Especially if you add BLIND ability (which is also useful to reduce the opponent's accuracy, especially Melee and Ranged units) and high SPEED will make it difficult for Melee and Ranged Units to attack him (Except for units that have SNARE ability, they are 100% successful in hitting FLYING units).