Defiler

Energy 4
{e}{e}, {t} : Choose 4 creatures you control. Until
end of turn, prevent the next 3 damage dealt to
each of those creatures.
{e}{e}{e}, {t} : Place a plague counter on up to 2
creatures. During each of your upkeeps, place
another on each targeted this way. That creature
gains -0/-1 for each plague counter.
{0} : Sacrifice a non-building creature. If you do,
place an energy counter on Defiler.