Cool video!
Haste spells, Spell Law 3.6, p. 9,
‘A hasted person could fire a bow, move, and then melee, or attack twice in a melee phase (once at the beginning and once at the end).
A hasted character may not fire more than twice a round.
Casting more than one spell/round is still prohibited.’
So the number of missile attacks would depend on,
2 missile attacks (normal action); 4 attacks (AM Speed); 6 attacks (+2 attacks from the Longbow spell).
All, thanks again for your advice.
How can you go higher than 2 attacks per round ?
The spell says "a hasted character may not fire more than twice a round". It doesn't restrict that statement, which, in my book, means that regardless of how many haste effects you stack, you cannot fire (or attack) more than twice per round. You can use the extra activity to do something else such as cast a spell or move.
The Long Bow spell does not increase activity available. Furthermore, it is explicitly stated that it is equivalent to the Short Bow spell (except for the weapon type created), and the Short Bow spell says "this spell may also, if needed, create arrows at a maximum rate of 2 per round". The thing is, this maximum rate *is not increased by haste* (it's not character activity, it's spell effect) and has nothing to do with the number of attacks you can do - it just provides ammo. In the end, You create a bow of force that allows you to fire up to twice a round without reloading (because the bow reloads itself instantly), and that's all - it you attack more than twice for any reason, the Long Bow spell has no further effect : it creates the weapon and creates two arrows per round. It does not increase the number of attacks you can make. I would indeed remove the reloading activity % required up to twice, but not more.
Additionally, I would say that haste effects are additive, not multiplicative. So haste does not double the number of attacks, it adds 100% activity. Adrenal Speed also adds 100% activity.
So in the end, you get :
100% activity, + 100% for Haste, + 100% for AM Speed.
You cannot attack more than twice per round.
The Longbow spell provides two 'instant reload' per round.
In the end, you spend 120% activity to fire twice without penalty (2x60%), which leaves you with 180% activity do do something else - cast a spell, move, perform your AM, whatever.
Powerful, yes, but not game-breaking.
As a side note, I must say that I've always been reluctant to allow two-weapon combo characters to attack twice in a round. After all, having two weapons does not allow you to parry twice as much. My take is that using two weapon combo gives you a bonus to attack (it makes your attack more difficult to parry or evade). Which is, from a balance point of view, commensurate with the bonus you get from using a shield.