Improved Spell Mastery

You have committed many spells to memory.

Prerequisites: Epic Mage

Benefit: You can master a single tier 3 spell. Alternately, you can master any combination of lower tier spells whose tiers do not exceed your intelligence bonus (tier 0 spells count as ½ a tier). 

Example: a wizard with a +4 Intelligence bonus could master two tier 2 spells, or eight tier 0 spells, or two tier 1 spells and one tier 2 spell.

Special: You can take this feat multiple times