Power Stone

equip {x} {b}{b}{b}{b}{b}{t}equipped creature it gets +2X/+0,
equipped creature must be legendary
it gains first strike, deathtouch,
vigilance, and trample.
This can be equipped to a planeswalker
if so the planeswalker gains the ability -2 deal 5
damage spread out among any
number of targets and also can attack like a
creature that is 0/X (X= loyalty)