Bristly Bill, Spine Sower is a mythic Legendary Creature — Plant Druid card from Outlaws of Thunder Junction (OTJ), collector number 157. Current market price: $32.96 (foil $41.99), TCGplayer market prices via Scryfall.
Landfall — Whenever a land you control enters, put a +1/+1 counter on target creature. {3}{G}{G}: Double the number of +1/+1 counters on each creature you control.