Ok, here is the first daily power for my beastmaster ranger.  Thoughts?

Daily Attack Power 1 Distracting Volley

Daily        Martial, Weapon, Arcane Arcane

Standard Action      Range Weapon, Beast

Requirement: Your beast companion must be adjacent to a creature.

Target: Burst 1 around your beast companion-Ignore beast companion

Weapon vs. AC

Hit: Deal 1[W] to each creature

Effect: Your beast companion makes an attack

Beast vs. AC

Hit: Deal 1[B] to each creature

Effect: Your beast companion marks a creature in burst 1 and the creature takes a -2 to attacks that include your beast.  The creature remains marked until it dies or is marked by something else.  Every turn you target the marked creature with a ranged attack, the creature takes a -2 to attack targeting your beast companion in addition to its marked penalty.