Question about Archane Archer.

[Vildrean]

I have a Bard/Archane Archer Drow.

I found to have myself with a Planar Anarchic Endless Ammunition Composite Longbow(2) +5.

So, the arrows I shot could be modified by the enhacements the class give me. Like they Be: Icy Burst and Holy, besides the Anarchic and Planar?

[fearcypher]

To my knowledge the abilities would stack but it should probably be left to the GM to make a call on it.

[Claxon]

There is a total +10 enhancement cap, that even class abilities cannot bypass.

I'm not sure about what the not flat enhancement bonuses amount to, but they will definitely limit how much you can further enhance it.

[PokeyCA]

Planar is +1, Anarchic is +2, and Endless Ammunition is +2. Therefore, the bow is at its maximum enhancement cap, and can't be enhanced any further. Anarchic is the only non-flat enhancement that transfers to the ammunition, so you would have +5 Anarchic arrows being shot (note that the bonus from Planar doesn't transfer). Those arrows can be upgraded by any abilities to a maximum of +3 bonuses.