Ben Kenobi

Mentor Vigilance
As an additional cost to cast this spell Exile one Legandary Creature that shares one or more
colorswith Ben Kenobi and has less power than
Ben Kenobi from your Libary face down, you may
cast it as long as it is Exiled.

Whenever a creature you own enters the battlefield,
you may have target creature get guided by
the Force. This abbility triggers only once each turn.