You call upon the power of the wind to summon a great gale that sweeps across a 150-foot radius, 300-foot high cylinder centered on a point within range. The gale is a swirling vortex of wind and debris that lashes out at enemies and protects allies.   When a hostile creature enters the area for the first time on a turn or starts its turn there, it must make a Strength saving throw. On a failed save, the creature takes 6d6 bludgeoning damage and is pushed 20 feet away from the center of the gale. On a successful save, the creature takes half as much damage and is not pushed.   In addition, your allies within the radius of the gale gain a +2 bonus to their AC, have advantage on Dexterity saving throws, and gain a flying speed of 30 feet.