Healdust Mech

Equipped creature gets +0/+8 and has "{g/w},
{t}: You gain life equal to the combined
toughness of creatures you control"
Equip {g/w}{g/w}
At the beginning of your end step, if Healdust
Mech is equipped to a homunculus, you may pay
{9}{u}. If you do, unequip healdust mech, then
your opponents mill cards equal to your life total.