Just use mana flasks. Unless you have extremely low totem damage, you should be able to easily juggle 1-3 mana flasks to recover mana as necessary.
Quote (Bendickson @ Aug 6 2013 01:59pm)
Mana lech is effected by this mod, mana leech merely increases your mana regen. Mana leech still works, but it is 50% effective.
Not quite. Half-regen reduces mana leech by 50%. No-regen does nothing to mana leech.