Gold Muncher Savanto

Flying, trample.
{b}: Each creature gets -X/-X until end of turn
where X is the number of dollars they cost.
{g}: Create X 1/1 red, green and black Dragon
creature tokens with flying and haste where X is
the total number of dollars each permanent your
opponent controls cost.
{r}: Savanto deals X damage to target spell or
permanent's controller where X is the total
number of dollars that it costs.