Whenever a Wizard loses one or Wizard levels, he instantly forgets a single spell for each Wizard level lost, chosen at random from those he knows.

Yes.

No. If a model has loses a Wizard level and has a selection of 'normal' and bound spells, do not include the bound spells when randomising which are forgotten.

Yes.

Yes. They count against the power limit until the moment they are rolled, at which point they are 'used up' and no longer count against the power limit.

They are added after rolling for the Winds of Magic but before any casting attempts have been made.

Yes. While the pool can never contain more than 12 power or dispel dice at any one time, some abilities can generate more dice part way through a Magic phase.

No.

Yes, the template must be placed over the target enemy unit.

No. A direct damage spell can't be used in a way that deliberately affects a friendly model (though they may end up scattering onto a friendly model and affecting it in that way).

No, the hole in the centre of the template must be within range.

Yes.

No.

As soon as the unit makes contact with the Magical Vortex it suffers the full effects of the spell (in the case of a spell that affects all models hit, every model whose base would pass into/through the vortex is affected by the spell). Surviving models are then placed 1" beyond the template and their movement ends.

Yes, regardless of when these dice are added. The exception to this rule is that it does not include any dice that are specifically stated as not being power dice (such as Night Goblin's Magic Mushroom dice).

Yes, as long as the casting value is met.

No to both questions.

No to both questions.

Yes to both questions.

Yes.

No.

You will need to beat the basic casting value of the spell (not the boosted casting value).

Yes.

Yes. It is worth noting that some lore attributes effects targets the Wizard casting the spell. In the case of Bound Spells it will target whoever is casting the spell instead.