I'm sure revives have the highest hit point potential if you don't mind sucking down some pots for the expensive mana cost. The time limit is obnoxious, but whirlybarbs tend to cut straight through skeletons. Tough revives from Act 4 or 5 NM will provide a much better hit point cushion than skellies.
This is assuming you're talking about using enigma to teleport with your minions so melee players can't hit you.
Well, that depends on how many minions are necessary. It does take quite a lot of prereqs to get to revives. I don't think you can revive the minions of destruction unfortunately. You can revive cows though >