Goliath Thallid

Goliath Thallid gets +1/+1 for each counter on
it. (This doesn't include +1/+1 or -1/-1 counters.)
At the beginning of your upkeep, put a reach
counter, a trample counter, or a spore counter on Goliath Thallid.
Remove three spore counters from Goliath
Thallid: Create a 1/1 green Saproling creature
token. That token enters the battlefield with a
reach counter on it.