Thessia, Red Mana Battery

Robotize {4}{r} (whenever this card destroys a creature during the battle phase you may pay
the cost 4/4 artifact creature on your field)
{t}: Add 6 {r} to your mana pool
Thessia and the Mox Ruby had a more fiery disposition, but with some Reeducation she learned her place an is my faithful red mana battery - Technaclaw Lab Notes