A swift action and then an immediate action?

[Alex_UNLIMITED]

Can I use with a magus arcane accuracy (swift action) and during the turn of my opponent use spell shield (immediate action)?

Quote:

Immediate Actions

Much like a swift action, an immediate action consumes a very small amount of time but represents a larger expenditure of effort and energy than a free action. However, unlike a swift action, an immediate action can be performed at any time—even if it's not your turn. Casting feather fall is an immediate action, since the spell can be cast at any time.

Using an immediate action on your turn is the same as using a swift action and counts as your swift action for that turn. You cannot use another immediate action or a swift action until after your next turn if you have used an immediate action when it is not currently your turn (effectively, using an immediate action before your turn is equivalent to using your swift action for the coming turn). You also cannot use an immediate action if you are flat-footed.

[King of Vrock]

Yes you can.

You use your swift action normally, then after your turn is complete you can use an immediate action to interrupt your opponents turn. The immediate action uses up your next turns swift action.

--School of Vrock

[Alex_UNLIMITED]

And then spell shield, can i use arcane accuracy?

Quote:

You cannot use another immediate action or a swift action until after your next turn if you have used an immediate action when it is not currently your turn (effectively, using an immediate action before your turn is equivalent to using your swift action for the coming turn). You also cannot use an immediate action if you are flat-footed.

[SlimGauge]

BEGINNING of ROUND

Your turn: Use swift action (Arcane Accuracy)

Not your turn: Use immediate action, despite having used (or not) your swift action. (I'm not sure how you're casting shield as an immediate action. Only feather fall is an immediate action to cast. But if it's possible by the rules, please tell us how you did it.)

END of ROUND/BEGINNING of SUBSEQUENT ROUND

Your subsequent turn: No swift action is available, as you made an immediate action when it was not your turn. You still have a Standard and a Move action.

After your subsequent turn: Immediate action is available, but if you use it, no swift action available on following turn.

[King of Vrock]

What SlimGauge said above...

You won't be able to repeat this every round. It'll be every other round at best because you have to wait a round till you get a swift action back.

[Alex_UNLIMITED]

It's bad for a magus!

[thejeff]

SlimGauge wrote:

BEGINNING of ROUND

Your turn: Use swift action (Arcane Accuracy)

Not your turn: Use immediate action, despite having used (or not) your swift action. (I'm not sure how you're casting shield as an immediate action. Only feather fall is an immediate action to cast. But if it's possible by the rules, please tell us how you did it.)

He's not casting shield, he's using the magus Arcana spell shield.