Venti is currently only obtainable in the "Ballad in Goblets" wish banner. He is a top tier support/enabler with an Anemo element. His skill can be a good move to disable enemies since it launches them to the sky, but it can also be used to launch the character for some traversal options. His main strength is the elemental burst. It gathers up enemies from the area and deals Anemo damage. If it comes into contact with another element then it will cause different elemental reactions and deal more damage.
"O wind upon which all hymns and songs fly, bear these earth-walkers up into the sky!
Press Summons a Wind Domain at the enemy's location, dealing AoE Anemo DMG and launching enemies into the air.
Hold Summons an even larger Wind Domain with Venti as the epicenter, dealing AoE Anemo DMG and launching affected enemies into the air. After unleashing the Hold version of this ability, Venti rides the wind into the air.
Enemies hit by Skyward Sonnet will fall to the ground slowly."