Happy Earth Day!
The guardian deity of Ula’ula is a lazy Pokémon. It commands plants to immobilize its foes and then deals them a savage blow with its horns.
– Pokémon Moon Pokédex
Tapu Bulu is the guardian deity of Ula’Ula island. Its ability Grassy Surge brings up Grassy Terrain, which powers up Grass type moves and heals all Pokemon on the ground at the end of the turn. This makes Tapu Bulu a harder to catch (’cause it heals), but it’s nothing compared to Tapu Fini’s Aqua Ring, since you can just wait 5 turns for Grassy Terrain to wear off.
Tapu Bulu has a lot of Defense and Attack.