Another SLA vs Spell-Casting question

[DrakeRoberts]

I know that Augment Summoning works with a summoner's Summon Monster SLA. It is my understanding that Spell Focus (Conjuration) will give +1 DC to a Glitterdust SLA. Does this mean that the Affinity for the Elements trait which reads: "Add 1 to the DC of saving throws made to resist the effects of spells cast by you that have either the air, earth, fire, or water descriptor, depending on which elemental lord you worship. ...." will (if worshiping the elemental lord of fire) give a +1 DC to your Burning Hands SLA?

I'm leaning towards yes, as I'm fairly sure the Spell Focus works and the only difference between that wording and the one from the trait really seems to be the word "cast", but I'm not positive, and would like to know for sure prior to selecting the trait for an upcoming character I'm working on.

Thanks!

[Drahliana Moonrunner]

I completely lost track of what question you are asking. Spell Focus Conjuration adds a +1 DC to saves made by Conjuration spells YOU cast. That's the totality of what it does, despite it being a pre-requisite for Augment Summoning.

[Chess Pwn]

I feel that yes. Spell focus works for SLA. SLA count as casting that specific spell.

[DrakeRoberts]

Sorry, the questions are:

1) Does spell focus affect the DC of school-appropriate SLAs? and
2) Does Affinity for the Elements affect the DC of descriptor-appropriate SLAs?

[Drahliana Moonrunner]

Chess Pwn wrote:

I feel that yes. Spell focus works for SLA. SLA count as casting that specific spell.

There however are no saving throw DCs relevant to the Summon Monster spells.

[CampinCarl9127]

1) Yes. A spell-like ability is an ability that functions like a spell for all intents and purposes.
2) Yes. See above.

Combining them is also possible. It would only work for a few niche spells, but it's a nice combo.