Game Mechanics: NPC(and Raid) Gate vs Mana Regen Cap Server Tick

[Brocode]

I know its been nerfed again to prevent infinite CH, but i believe it also need to do a check on NPC gate spell, as we had enchanters draining Gozzrem for example today, he couldnt CH, but still managed to start casting gate even tho Encs kept mana sieving from time to time and receive 0 mana on ToT drain. Not sure if intentional or not, but we cant beat a server tick of 100 mana or min mana when mob insta cast if he has it. Think you should check balance for atleast his mana regen be Gate Mana minus 1, having the need of 2 server ticks in order to give us a chance to restrain a mob from gating, because if he insta get the mana and start casting matters not if dotted or drained, once server ticks he will just start casting gate.