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This might seem like a stupid question, but when can you use psychic powers with a Farseer? I've always used any and all psychic powers in the shooting phase, even if it doesn't say "use instead of shooting attack" or whatever, but I've seen some strategies which seem to imply that people Fortune, guide, etc. things before they start moving bout. Can you use non-shooting powers in the other phases, or am I just being stupid? It's possible I'm being dumb. After all, I only recently noticed that Psychic poers fail on an 11 due to it being a Leadership test.
Farseer powers are a bit strange. In the section that describes them it says that they are ALL used BEEFORE the movement phase unless otherwise noted. Also, powers fail due to the leadership value but perils of the warp are only engaged on double ones or double sixes and on double ones the power still goes off it just harms the seer in the process.
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Doom, Fortune and Guide should be the very first thing you do on your turn if you want to use them.
Eldritch Storm and Mind War are used anytime during the Shooting Phase, although probably after any guess range weapons.