Spawning Pit has at least two charge counters on it.
({1} magic symbol) available.
Steps
Activate Spawning Pit's second ability by paying ({1} magic symbol) and removing two charge counters from it, creating a 2/2 Pincher and a 1/1 Soldier creature token.
Activate the Soldier and Pincher by tapping them, adding ({G} magic symbol) ({G} magic symbol) .
Activate Spawning Pit's first ability twice by sacrificing the Soldier and Pincher, putting two charge counters on Spawning Pit.