It gives players the option of rushing Athene's and becoming spam-happy. Even if some catsers aren't super mana-intensive (I'm thinking Ziggs), they would LOVE to have essentially a permanent blue buff. If Ziggs had no mana to worry about (which he really doesn't have a big mana issue if he's played smart anyway), it would just be bombs everywhere without even giving a crap, and I think that's what I plan to do. You can build yourself a blue buff without sacrificing too much AP.
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