Mild Elemental

If Mild Elemental has 3 +1/+1 counters it has
Trample, if it has 6 it has Menace, if it has 9 it
has Reach.
{1}{g}{g}: Put 3 +1/+1 counters on Mild
Elemental, each time you use this avility it costs
an extra {1}.
Sacrifice Mild Elemental: Add {g}{g} to your
mana pool, add an extra {g}{g} for each 3 +1/+1
counters on Mild Elemental.