Grounding Goo vs. Spell-like Abilities

[Flames of Chaos]

First off, apologies if this is in the wrong area, but I'm never quite sure what goes under "Advice" and what should be asked under "Rules Questions" If this is in the wrong section, please move it to where it belongs, and my thanks in advance!

That out of the way, here's my question: The Grounding Goo Alchemical Discovery says it impedes non-magical flying, including a penalty to fly checks.

Does this mean creatures with Fly as a spell-like ability are also immune to this penalty? I've always been confused on the difference between spells and SLAs that mimic those spells.

Here's the exact wording on the discovery, courtesy of Archives of Nethys:

Grounding Goo* (Su) (Ultimate Wilderness pg. 34): The alchemist’s bomb applies a sticky residue after any damage from the bomb is resolved. If a creature damaged by the bomb has a nonmagical fly speed, its flight is severely impaired, and it takes a penalty equal to the alchemist’s level on Fly checks for 1 minute.

----

Thoughts?

[blahpers]

This is definitely a Rules Question. : ) Advice would be more "What are some good combos for grounded goo?" or "I'm a GM, how should I deal with the PCs grounding all mah dragons?"

Correct, flight gained via the fly spell would not be impeded.

[Ryze Kuja]

It's meant to impede flight gained from mundane forms of flying, like flapping wings. SLA's are magical so Flight gained from an SLA would not be impeded.

Spell-Like Abilities wrote:

Spell-Like Abilities (Sp)

Spell-like abilities, as the name implies, are magical abilities that are very much like spells. Spell-like abilities are subject to spell resistance and dispel magic. They do not function in areas where magic is suppressed or negated (such as an antimagic field). Spell-like abilities can be dispelled but they cannot be counterspelled or used to counterspell.

[Flames of Chaos]

Ryze Kuja wrote:

It's meant to impede flight gained from mundane forms of flying, like flapping wings. SLA's are magical so Flight gained from an SLA would not be impeded.

Spell-Like Abilities wrote:

Spell-Like Abilities (Sp)

Spell-like abilities, as the name implies, are magical abilities that are very much like spells. Spell-like abilities are subject to spell resistance and dispel magic. They do not function in areas where magic is suppressed or negated (such as an antimagic field). Spell-like abilities can be dispelled but they cannot be counterspelled or used to counterspell.

Ooooohhh, so they're abilities that are inherently magical and mimic spells, but they're not actually full spells in their own right. Tha'ts what has been confusing me for years. Sad to know about Grounding Goo as I've been playing Jade Regent, and it's chock full of oni among other annoying nasties with the fly spell or a fly SLA. *sigh*

Thanks all!