Eldar Farseer have Runes of Farseer ability that says
Once in each Psychic phase, a model with this special rulecan re-roll any number of dice used in a single Deny the Witch test of Psychic test.
Can Farseer use the runes to "guide", lets say a warlock who screwed his psychic test? It says "single" not "their". But rule is still tied to the model, so i wonder if this ability can be used by Farseer on other models.
And Autarch's path of command says
If your army contains one or more Autarchs or Autarch Skyrunners, you can modify any of your Reserve Rolls by +1 or -1.
I assume i can modify reserve rolls from Allied detachment, regardless of how "friendly" they with my main one. Or there is some quirk with "threated as enemies that cannot be attcked" or something?