Diablo – limit or penalty in resurrect an ally

I think you're asking the wrong question for how to get the Instant Karma achievement. You don't really need him to teleport to any specific place at all. Instead, you need him to do his big ghostly swing ability (during which he is invulnerable) into a pack of minions.

You can do this by staying pretty close to him (which you understandably won't be doing much of if you're a Wizard). The minions will come closer to you, which is closer to him. Then, when he chuckles to take his big swing, dodge away. His direction is pretty set when he begins his swinging, and he should take out several of the the minions for you.

I believe you need to repeat this 2-3 times. Fortunately, the minions dying will give you health globes. You may also want to consider taking some damage reducing abilities, like Diamond Skin, for when you're standing near him or as he starts swinging.

Do you not have advanced tool tips turned on?

Familiar has a duration of 5 minutes.

Summon a companion that will attack your targets for 20% weapon damage as Arcane. This companion cannot be targeted or damaged by enemies and lasts for 5 minutes.