Z7 mech

When this enters the battlefield, sacrifice it
unless you control a card named Z7 Imp.
Equipped creature gets +5/+5; {3}: this creature
deals 2 damage to target creature or player; {2}: this creature fights target creature, use this
ability only once per turn; {2}: this creature gets
+5/+0, use this ability only once per turn; and {5}: Equipped creature gets indestructible until
end of turn, at the end of your turn, put Z7
Mech on the bottom of your library.
"bee boo bee bop, brains!"