which mage prevent Bosses heal?

[belmont]

I remotely remember someone said summon some mages to prevent ubers heal, but which type? cold, fire, poison or lite?
:yes:

[omgwtfbbqpwned]

Poison, because they do damage over time.

[belmont]

even for poison resist 110% ubers like Meph? In that case, is cold better?

http://diablo2.diablowiki.net/Uber_Mephisto

[Poppis]

No, it doesn't work if the monster is immune to poison. Cold would slow them down, but doesn't effect their life regen.