Nautilus will have mana problems if this change goes thru
Nautilus at the moment is already pretty tight as far as the mana department goes and you're heavily reducing his cooldowns but only slightly reducing his mana costs
Going from 100 mana every 6 seconds to 80 mana every 3.6 seconds is going to increase his mana cost from ~17 per second to ~23 per second
Suggestion Reduce his cost new cost to 35/45/55/65/75
/
/ Blue buff
where having mana is for the weak :p