The Guildmaster

Whenever you cast or you level up a class card, create a 1/1 colorless Hero token.
It has "It gains +2/+2 for each level class attached to it."

{x}, {t} : Create a token that is a copy of target class.
{x} is equal to the class' level.
The token is a legendary aura with all the text the class has by leveling up.
Attach this aura only to a Hero.

You can be everything ! - The Guildmaster to any brave hero.