This is a little off topic but why are only certain monsters able to carry 3 runes without having to pay 250 for the slot? I have two firequinns 1 is lvl 70 and can only hold 2 runes but the other is lvl 7 and can hold all three without me buying them. Same goes to the valdamagma and arch knight. They can hold 3 runes and not pay 250 for the slot, but almost every other one I have to pay for. Just confusing as to they they're special.