You only need 10 points. Since you'll want to get the highest level possible, it's best to utilize the learning skill ASAP. That +3 Int. +1 int from linguistics, +1 int from Scouting. That's 5. Depth of Thought is +10 for 2 battles, but it does count towards tyou current stats, so that's +15. All you need is a few extra skills or a few items and voila, you have Elenhel.
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