Lily a little unnecessary?

[basketofseals]

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Lilies have no appreciable positive impact on your mana pool. You're not saving much mana with a ~12s recast reduction on a select few oGCDs, especially when you're spending mana to generate them in the first place.

If you get smashed into the face with magic hammer or just die at an inopportune time, then you're going to be casting a lot more cure 1s than normal. 20% off on 4 oGCDs can go a long way when you're treading water.