Tainted Scholar enhancements

Tier One
Requires Tainted Spellcasting, Warlock level 1

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

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

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

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