The Party Tree

This spell costs {x} less to cast, where X is
the greatest power among creatures you control.
{t}: Add {g}{g}. You gain 2 life.
Whenever a nontoken creature enters
the battlefield under your control,
put a +1/+1 counter on it and draw a card.
"Eleventy-one years is far too short a time to live
among such excellent and admirable hobbits."