Sacred Defender enhancements

Tier One
Requires Holy Bastion, Paladin level 1

Tier Two
Requires Paladin Level 2, 5 APs spent on tree

Tier Three
Requires Paladin Level 3, 10 APs spent on tree

Tier Four
Requires Paladin Level 4, 20 APs spent on tree

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