ninja and invisibility

[Erethrin]

in the invisibility spell , it say that you become visible if you attack somebody

what happen if a ninja sneak on someone while invisible and do a full round attack
do he get +2 on attack roll and sneak attack dmg only on the first attack or does he get those bonuses on all his attacks at that initiative?

at first i thought only on the first one , but after that i thought about how initiative interact with combat , especially when you attack someone that never had a chance to play (lower ini on the first round)
on that exemple the poor guy is flat footed on all the attacks , not only the first one.

thought ?

[wraithstrike]

He is only invisible for the first attack.

If the ninja wins initiative then he gets to sneak attack for the entire first round.

[Erethrin]

thats my understanding of the rule , its just that it make no sense at all.

that in the first round he could get attacked mutiple time before having the time to react (regaining his dex) , but when someone is invisible (after first round) and that his target might be unaware of the attacker presence (using stealth) , but after the first attack he get to react and somehow defend himself (regaining his dex) for the subsequent attack

[wraithstrike]

I think the idea behind being flat-footed is more of a thing to reward those who go first. I agree it does not make sense especially if the bad guy trades barbs with the PC's before combat begins.

I don't compare the two(steatlth/invis, and losing initiative) though. It makes accepting it easier.