Hearthpwn

This deck looks good. A quick question: if you can duplicate your Apprentices, don't you become constrained then by Antonidas? Besides, you have to get rid of any other card with equal or lower mana than the Apprentices in order to copy them, right? 1- and 2-mana amount to roughly 1/3 of your deck, not counting the extra cards you obtain, so you need to time your Simulacrum perfectly, otherwise you are going to be stuck in the same conundrum as if you hadn't had them.

Quote from LowKast >>

Yes, you are still constrained by Antonidas, but this puts some relief on the two other constraints. It's true that you have to get rid of the lower cost minions before using Simulacrum, but from experience it hasn't proved much of a problem. When you get close to the combo it's usually pretty late in the game already, most of them have been used or can be used before using simulacrum (with 10 mana you can get rid of 3 of your two cost minions before using it).