Mountain Tribe's Chosen one

When Mountain Tribe's Chosen one is in the command zone or on the battlefield all mountain tribe creatures you control get +4/+6 until end of turn.
When Mountain Tribe's Chosen one enters the battlefield create {x} {x}/{x} Mountain tribe Disciple creature tokens with haste, Vigilance, Firststrike and Protector (If your commander were to take damage instead put all of that damage onto this creature instead).