Celeste is very similar to 
Mina as she is a hyper-mobile mage that specializes in large forms of burst damage and sustain. As Mina has verticality and invulnerability through her 
Sanguine Retreat, Celeste gains large forms of air control and a lower gravity instead. The goals of both characters are vastly similar however, as they both want to take over the map and lane with high mobility and high damage.
From the official Steam page:
"It's not every day that Coney Island's biggest star, The Dazzling Celeste, performs on the streets of Manhattan. Her show begins with Light Eater, where a deep breath lit by her blazing baton coats enemies in front of her, and grants increased damage against them. Following that up, she envelops herself in the prismatic shield of her Dazzling Trick, which explodes and silences nearby enemies who break it. Try not to get distracted by her gliding gracefully through the air, or by the dance of her Radiant Daggers, as you'll regret being underneath them when they rain down from above. As for her memorable final act, the Shining Wonder will make her allies go OOH and her foes go AGGHHH! - "You are about to see something rare and wonderful!"
