Jeffrey, Wurm Wrangler

+1: Create a 1/1 green Plant creature token.
-3: Plants you control become Wurms with base power and toughness equal to the number of Wurms in play and gain trample until end of turn.
-8: At the beginning of combat this turn, creatures you control get X +1/+1 counters, where X is the greatest power among creatures in play.