Q: When attempting to Deny the Witch on a blessing or conjuration, do you select a unit first to make the attempt? If so, how is it selected, and if that unit has a re-roll on Deny the Witch, do you get that as well?
A: You do not select a unit. If none of your units were the target of the enemy’s psychic power (as is the case with blessing and conjuration powers) you can still attempt to Deny the Witch, but with no re-rolls or modifiers to your dice rolls – you will require rolls of 6 to nullify each Warp Charge point