Lone Druid

Control runes with hero and Spirit Bear.

Fish for entangle by poking opponents with the Spirit Bear here and there. If it procs, you can do follow up damage.

Make use of catapult waves. The Spirit Bear can tank tower shots for a while.

When in trouble, consider using Savage Roar and True Form. Lifesteal or body blocks from the Spirit Bear can help.

Avoid showing your hero too much, especially at the start of the fight.

You can take Roshan fairly early by yourself or with minimal help. Tank with hero as the Spirit Bear will heal you.

Make sure to pick up Aghanims Shard on your hero at the 15 minute mark. It provides a drums-like buff and basic dispel with Savage Roar.

In tough late game scenarios, resort to ratting with Aghanims Scepter on your Spirit Bear to let it attack away from your hero.

Spirit Link heals Lone Druid every time the Bear hits. Burst Lone Druid or don't bother hitting him.

Lone Druid buys items for the Spirit Bear. If you kill Spirit Bear twice, he does no damage.

Spirit Bear does a lot of damage to buildings. Organize defense quickly.

Lone Druid is a snowbally hero and falls off as the game goes. Look to extend the game.

Lone Druid is great at split-pushing and ratting. Consider getting Boots of Travel on a core.