Two spell shapes

[The Total Package]

Can I cast Courageous Anthem + Fortissimo and then second action Courageous Assault?

[NorrKnekten]

You cannot, Spellshapes require the following action to be the one they modify. You cannot use free actions to bypass this either.
Courageous Assault -> Fortissimo -> Courageous Anthem gains no benefit from the Assault.

This is covered under the spellshape trait

spellshape wrote:

Actions with the spellshape trait tweak the properties of your spells. You must use a spellshape action directly before casting the spell you want to alter. If you use any action (including free actions and reactions) other than casting a spell directly after, you waste the benefits of the spellshape action. The benefit is also lost if your turn ends before you cast the spell. Any additional effects added by a spellshape action are part of the spell's effect, not of the spellshape action itself.

[Finoan]

There are actually two problems with this idea.

One is the Spellshape trait. You can only effectively use one spellshape action on one spell. You can't have a spellshape action applied to the rest of the spells cast during that round. You also can't have two spellshape actions affect the same spell.

Spellshape trait wrote:

You must use a spellshape action directly before casting the spell you want to alter. If you use any action (including free actions and reactions) other than casting a spell directly after, you waste the benefits of the spellshape action.

So "(spellshape), spell, spell" will work, but the spellshape will only affect the first spell, not the second.

And "(spellshape), (spellshape), spell" will not really work. The first spellshape action is wasted because the next action is not casting the spell.

Also "(spellshape), spell, (spellshape)" doesn't work since the second spellshape action is not being followed by a spell. It doesn't apply to previous spellcasting.

The other problem is that both of the spells being proposed are Composition spells. Edit: I am thinking instead of Rallying Anthem instead of Courageous Assault. The Composition trait prevents casting more than one of them each round. Additionally if you cast one Composition it will immediately end any other Composition effects that you have active at the time.

So "cast Courageous Anthem, cast Rallying Anthem" wouldn't work because you can only cast one of them each round.

And "cast Courageous Anthem" one round and "cast Rallying Anthem, Strike" the next round will not have both effects on the Strike. I'm a bit unclear on if Courageous Anthem would normally last until the end of your next turn, but no matter the ruling on that, casting Rallying Anthem as your first action of that turn will instead end the effect of Courageous Anthem immediately.