Concentrate Spell [Metamagic] (from School of Evocation)
You can cause your spells to penetrate energy resistance by concentrating ans strengthening them.
Prerequisites: Arcane spellcaster level 1st+, ability to cast at least one spell from the evocation school of magic.
Benefit: You may choose how many levels you wish to increase a spell's level when concentrating it. For every level you increase the spell, it ignores 10 points of energy resistance when dealing damage.
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