Originally Posted by
Silver-Strider
First off, Thin Air is 12s. How where you only getting 4 casts in instead of 5? Even with low SpS, 5 casts every Thin Air was possible, even more so if you used PoM in conjunction with Thin Air.
Secondly, PoM was on a 150s CD in ShB vs the current 120s, meaning it's up more often and putting more strain on your MP.
Finally, Old Thin Air had a much higher saved MP potential than you're playing it out to be. On mechanics like Terminal Relativity, you would cast things like Medica 2 and Cure 3 as well as any Glares you could fit in as well, so in those instances, Thin Air was saving you much more than the current iteration could ever hope to match. Even if both charges are available to get rid of the costs of Medica 2 and Cure 3, the Glare casts are still coming out of your MP whereas before that wasn't the case.
So yes, that mana deficit is absolutely enough to break WHM's mp economy.