Goto, Beastly Retainer

{p/b}{p/r}: Create a 1/1 black and
red beast token that has the ability:
"Sacrifice this creature: create 1 {b/r} mana"
it has haste.
Every time you sacrifice a creature put
a {e} counter on Goto, Beastly retainer.
Remove five {e} counters from Goto,
Beastly retainer and double the
number of red and black beast tokens.