The power stone

The power stone enters tapped. this is not a creature
{t} add an -1/-1 counter to this card
When attach to infinity gauntlet it gains:
+3: add three mana in any combination or gain 6 life this mana cannot be used for a infinity stone's ability.
-5: untap all the infinity stone's
-x: put x -1/-1 counters on an infinity stone
{b}{b}: untap a infinity stone
{b}{b}{b}{b}{t}: attach to infinity gauntlet (must have power and toughness of 1)