Koro Rutonde, Metallier

{1}{w/u}: Create an Experiment ({t}, Sacrifice this
experiment: Draw 3 cards, you may play one of them
for free this turn. Activate only if this experiment has
been in play for at least three full turns).
{3}{w/u}: Gain 4 Life or counter target creature spell.
{5}{r}{g}: Create a 5/4 Mutant creature token, it
has "{1}{x}: Lose X Life and sacrifice a creature,
then deal thrice X damage to any target."