Killer Queen (Pt. 4)

Partner with Yoshikage Kira (Pt. 4)
When this creature deals damage, put a bomb
counter on a nonland permanent. You may pay
X mana where X is that permanent's converted
mana cost, if that creature has an aura attached
to it , include the mana cost of that too. If you
do, destroy that permanent. You may do this
as long as that permanent has a bomb counter on
it