If I have evasion and am riding a mount that does not and we are targeted by, say, a fireball, does my evasion apply to my mount?

What happens if the converse is true and my mount has evasion (for whatever reason) and I do not?

I was discussing this with my GM tonight and we couldn't come up with a reasonable answer that either of us were satisfied with.

If you have evasion and your mount doesn't, your mount doesn't get the effects of evasion.

If your mount has evasion and you don't, you don't get the effects of evasion.

This is due to you and your mount not being the same creature.

If you need to think about it in a more fluffy way, think about it like this:

Your mount has evasion and manages to find a place that's safer from the effect for itself, that leaves you sitting on it's back completely exposed to the effect since it's not worrying about you at the moment.

You have evasion and manage to find a place that's safer from the effect for yourself. The thing is it's more then likely that place is the opposite side of your mount from the effect. By ducking down to one side and using the mount itself as cover you keep yourself safer at the cost of your riding companion.

If I have evasion and am riding a mount that does not and we are targeted by, say, a fireball, does my evasion apply to my mount?

What happens if the converse is true and my mount has evasion (for whatever reason) and I do not?

Might make a nice feat though. Either for the mount or the rider - Share Ability or something, kind of like extending spells though familiars.

Yeah, this is the saving grace for familiars that have evasion. Per the rules, when a fireball affects a mage whose familiar is in a coat pocket, the familiar must roll the save as well (separate creatures and all).

Now most people will say that the mage's possessions don't need to save unless the mage rolls a natural 1, but creatures are never possessions per RAW. Only objects are. So a dead familiar wouldn't need to save (the body is an object, not a creature) but that's not very useful. ;)

You can also run afoul of the familiar treating its master as a mount! Normally there isn't any benefit to doing so, but I saw some interesting builds back in 3.0 that were able to take advantage of this.

Okay, so it is well established that mounts/riders do not confer evasion from one to the other. That's fine to me and (as I have now discussed this with them) my group. We would, however, find some way to make this possible.

Discussing things with the primary GM, we are wanting to craft a feat that (with a clever use of the Ride skill) allowed the mount to confer evasion to its rider.

Something like this:
Skilled Rider
Prerequisite: 7 ranks in Ride, Mounted Combat
Benefit: By succeeding on a Ride check (DC = 10 + 1/2 damage taken) a rider may gain the benefit of Evasion if your mount has Evasion.
Normal: A rider does not gain the benefits of Evasion from his mount.

Just a rough stab at a feat. I'm sure it needs a lot of polishing. Also, maybe their needs to be a "greater" version that allows Improved Evasion.

Thoughts?

This is a good feat. May I add a similar version of it to my website with credit to you?

Sure. If you start making money off of it, let me know. I might have to reconsider my plans of looking for a real job.

Thanks. Here it is.