Kor,the first nyxborn

Hex proof, indestructible
When played from the hand or commander zone.
attach this card to a creature you control that creature gains
hex proof and
indestructible and it's power and toughness double.
When the creature this is attached to is exiled or
this card is destroyed pay {x}.
this card is put onto the battlefield and gains +1/+1 counters equal to the pay by X.