Best team for Lancelot in ML Adventure are: Lancelot + Grock + Argus + Change.
Ultimate: Phantom Execution
Lancelot swings his sword forward with all of his might, temporarily turning himself invincible, and striking the target, doing damage to it equal to 375% of his Attack. The target that has less than 35% of its maximum health gets damaged by 130%.
Lancelot pierces the opponent line-up and attacks the enemy in the back row directly, dealing 335% of his Attack in damage. Additionally, Lancelot will become immune to control effects for a brief period of time and won’t be as easily targeted by ranged adversaries.
Skill: Thorned Rose
With unfathomable dexterity, Lancelot repeatedly inflicts damage to a single target equal to 75% of his Attack.
Passive: Soul Cutter
After defeating the target, Lancelot gains 15% of their Attack. His own Attack will not be more than all of the acquired Attack.