Regrowth Passive Heal

This is a good build that provides the team with healing and protects Malfurion himself.

Level 1

Emerald Dreams is a useful talent. But this build has a high mana cost. So if you think you can't hit E, or you don't really need sleep, you can take Deep Roots .

Level 7

Wild Growth сan be taken when the other two are not needed.

Nature's Cure is a less powerful analogue of unstoppable, but affects multiple allies. Its competent use in the right situations can save the lives of allies.

Tenacious Roots  helps against aggression against Malfurion himself.

Level 10 and 20

Twilight Dream works well against melee heroes. His upgrade Astral Communion is very strong, but requires proper use.