How long does Domination/Mind Control effect last

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I'm currently on my final mission (Commander/Ironman) and I've just triggered the pod (2 codexes, 2 gatekeepers) before the last hall. I've dominated one of the gatekeepers with my Commander Avatar and have a chance to dominate either a codex or another gatekeeper.

However, I'm not sure about the mechanics. Many threads say the domination lasts forever which is untrue. I can tell that from my personal experience playing Veteran/Ironman 3 weeks ago (pretty painful when mind control of a gatekeeper was lost on the final mission). My questions are:

  1. Are there any differences in the effect comparing Psi Op and Commander Avatar (other that the former can be used once per mission)?
  2. What would you dominate with a Pri Op in my situation? A codex or the second gatekeeper? Or, keep the charge for later turns?

Best Answer

Dominate and Mind Control are different abilites.

The Psion's Dominate ability lasts forever (or at least until the mission ends). You can only use it successfully once per mission though, after which it is unusable even if the target dies.

The Avatar's Mind Control is only temporary and lasts 4 turns. If the target is still alive when it ends, it can and will attack you. However, it can be used multiple times per mission and typically has a 100% hit chance.