Cadmium

At the beginning of each upkeep, if Cadmium is untapped, you loose one life.
Untap Cadmium during each other player's untap step.
{t}: Add {r}{r} to your mana pool.
-Discovered by Fredrich Stromeyer in 1817 at Hildesheim, Germany.
-Atomic number 48, atomic mass of 112.4 g.mol^-1.