Master and Apprentice

“Always two there are—a Master and an Apprentice.”

Whenever a Jedi Master you control enters the battlefield, create a 2/2 white Jedi Knight token.
If a Jedi Knight you control dies, you may put a +1/+1 counter on a Jedi Master you control.

(Through the bond of Master and Apprentice, the knowledge of the Jedi Order is passed down.)