Mentor: Give the Student Lifesteal.
Card sounds may differ from in-game as they get updated.
Lifesteal - Units and spells with Lifesteal give you health when they deal damage, healing you equal to the damage dealt.
Mentor - Cards with Mentor have an additional effect when played if you exhaust one of your students as a Student. Units that are already exhausted can't be used as a Student.
Student - Interacts with Mentor