Briar Hydra is a rare Creature — Plant Hydra card from Dominaria United (DMU), collector number 427. Current market price: $0.44, TCGplayer market prices via Scryfall.
Trample Domain — Whenever this creature deals combat damage to a player, put X +1/+1 counters on target creature you control, where X is the number of basic land types among lands you control.