Krax, Lord of Pain

Whenever an effect you control deals damage to
you or causes you to lose life Krax, Lord of Pain
deals 1 damage to any target other than you.
As long as your life total is less than or equal to
half your starting life total Krax, Lord of Pain has indestructable.
As long as your life total is less than or equal to
one forth your starting life total Krax, Lord of
Pain gets +2/+2.