Nature's Warrior enhancements

Tier One
Requires Nature's Warrior, Druid Level 1

Tier Two
Requires Druid Level 2, 5 APs spent in tree

Tier Three
Requires Druid Level 3, 10 APs spent in tree

Tier Four
Requires Druid Level 4, 20 APs spent in tree

Tier Five
Requires Druid Level 5, Character Level 12, 30 APs spent in tree