Baru, Wurmspeaker is a rare Legendary Creature — Human Druid card from Dominaria United Commander (DMC), collector number 76. Current market price: $1.27 (foil $1.41), TCGplayer market prices via Scryfall.
Wurms you control get +2/+2 and have trample. {7}{G}, {T}: Create a 4/4 green Wurm creature token. This ability costs {X} less to activate, where X is the greatest power among Wurms you control.