Beast King Gilaros

Taunt. Armor Regen.
You may play this creature at {r}{r} cost, but it's
power and toughness are halved.
When you play this creature, you can add 1
"Beast King" creature from your DP to your hand. This effect of "Beast King Gilaros" can only be
activated once per turn.
While this creature is in play, all "Beast King" creatures gain +0/+2.
When this creature is played at full cost, it gains undying.