Ghave has at least two +1/+1 counters on it, or there is a +1/+1 counter on another creature you control.
Kaya has at least two loyalty counters on it.
({2} magic symbol) available.
Steps
Activate Kaya's second loyalty ability by removing two loyalty counters from it, causing you to double any tokens you create this turn.
Activate Ghave's first ability by paying ({1} magic symbol) and removing a +1/+1 counter from a creature you control, creating two 1/1 Saproling creature tokens.
Activate Ghave's second ability by paying ({1} magic symbol) and sacrificing a Saproling.
When the Saproling dies, Pitiless Plunderer triggers, creating two Treasure tokens.
Resolve the Ghave ability, putting a +1/+1 counter on it.
Activate both Treasures by tapping and sacrificing them, adding ({2} magic symbol) .