Jill, Substitute Image

You may have Jill, Substitute Image enter the battlefield as a copy of any creature on the battlefield, except it's Legendary and an Illusion in addition to its other types, it has "When this creature becomes the target of a spell or ability, sacrifice it" and Jill's other abilities.
Teacher {3}
{u}: Jill, Substitue Image becomes another Legendary Creature.
Jill West was always becoming other teachers.