Grassy Glide

Lasts 5 turns (8 with Terrain Extender). Grass-type moves used by grounded Pokémon deal 1.3× damage. At the end of each turn, grounded Pokémon heal 1/16 of their max HP. Earthquake, Bulldoze and Magnitude deal half damage to grounded targets.

Only one terrain can be active at a time: a new one replaces the old one. "Grounded" means not Flying-type and without Levitate or Air Balloon.

See Grassy Terrain and who learns it