Overpowered Party Problems: Too Much Forced Movement

[Memento Mortis]

Okay everyone, my group and I need your help. Rules sleuths to the rescue!

The Situation:

Party's Fighter: Shield Bash/Spiked Destroyer Build. Feats: Shield Bash, Improved/Greater Bull Rush, Spiked Destroyer. Basically he can attack with his Shield, which grants him Free Action Bull Rush
and a Swift Action attack with his Armor Spikes if the Bull Rush is successful.

Party's Summoner: Humanoid Eidolon. Evolutions: Reach, Slam, Grab. Whenever the Eidolon successfully hits with his Slam he can attempt a Grapple as a Free Action if his target is his size or smaller. According to the Grapple rules, success means that his target is pulled adjacent to him.

Both Fighter and Eidolon are adjacent to a medium sized enemy. Fighter Shield Bashes enemy does damage and Bull Rushes. Because of Greater Bull Rush this provokes an AoO from the Eidolon. Eidolon hits with his Slam and gets his free Grab attempt. It's successful.

So my questions are thus:

What happens to the poor enemy? Which forced movement occurs? Do both of them happen? If so, which happens first? What if the Fighter rolls well enough on his Bull Rush to force multiple squares of movement?

Any insight would be much appreciated!

[Tom S 820]

I would say if the fighter Bullrush beats the target and the Eidolon CMD then than fighter moves the target. If not then the Eidolon moves the target if Eidolon beats the targets CMD with its grab.

[MurphysParadox]

The eidolon grabs the target away from the fighter. Bull Rush just shoves the target in a direction, grab physically secures the target from future movement. That's the reasonable interpretation. The eidolon can also choose to forgo the grab attempt and let the bullrush continue.

[Memento Mortis]

Conversely, how does it work if say, a the Eidolon has grabbed a creature and is grappling it. Then the Fighter Bull Rushes the creature out of the Eidolon's reach. Is the grapple broken? Would the Fighter need to bypass the Eidolon's CMD (to break the grapple) as well?

[Claxon]

The fighter bullrush is what allows the eidolon to make the attack of opportunity in the first place. The eidlon's slam attack can turn into a grapple if successful. In this event I would say the character is moved towards the eidolon in accordance with the rules for bullrush, and then caught by the eidlon's grapple and pulled adjacent to the eidlon.

Memento Mortis wrote:

Conversely, how does it work if say, a the Eidolon has grabbed a creature and is grappling it. Then the Fighter Bull Rushes the creature out of the Eidolon's reach. Is the grapple broken? Would the Fighter need to bypass the Eidolon's CMD (to break the grapple) as well?

Probably the easiest way is to set it up as a bull rush against both creatures.

[Mojorat]

The eidolon can only grab things smaller than itself. Eidolon don't have the universal monster rule grab. There is also some question about wether a creature can grab outside its turn.

[EvilMinion]

Memento Mortis wrote:

Party's Summoner: Humanoid Eidolon. Evolutions: Reach, Slam, Grab. Whenever the Eidolon successfully hits with his Slam he can attempt a Grapple as a Free Action if his target is his size or smaller.

FYI, to the bolded portion above... this is not what the actual eidolon evolution says.

Grab evolution:

This ability only works on creatures of a size one category smaller than the eidolon or smaller

Unless there was a change to the evolution that didn't get updated on the prd.

[edit]oop, didn't see Mojorat's post til too late!

[Heimdall666]

RAW: "An attack of opportunity "interrupts" the normal flow of actions in the round. If an attack of opportunity is provoked, immediately resolve the attack of opportunity, then continue with the next character's turn (or complete the current turn, if the attack of opportunity was provoked in the midst of a character's turn)."

...states that you resolve the first AOO, then continue with other characters actions in the round. So, fighter bull rushes, and if he pushes via bull rush past the reach of the Eidolon, the eidolon loses the AOO unless he can take an immediate move action to stay within reach. If he can, he then reach-grab-slams as the target is still legit. If the fighter is smart, he will keep the bull rush small as the actual distance pushed is an option not a requirement of the bull rush, he doesn't do more damage from pushing him a longer distance (Barring cliffs, lava pools, etc...).