Mythic Adventures - Trickster Attack: Surprise Strike clarification?

[Damon Griffin]

Trickster Attack: Surprise Strike (Ex): As a swift action, you can expend one use of mythic power to make a melee attack or ranged attack against a target within 30 feet, in addition to any other attacks you make this round. When you make a surprise strike, the target is considered flat-footed regardless of any class features or abilities it might have , and you add your tier to the attack roll. Damage from this attack bypasses damage reduction.

Our group is divided on a question here: Two members insist that the phrase "class features or abilities" must be read as "class features or class abilities"; that "abilities" as used here cannot be interpreted to include universal monster abilities, supernatural abilities, etc.

The rest of the group thinks there is at least some ambiguity there. Who's right?

[Jeff Merola]

It's class features OR abilities. Not class features or class abilities (which are all called class features, so is 100% pointless and redundant to call out separately).

Generally speaking when you're dealing with Mythic, the stronger option is probably the more correct one.

[Damon Griffin]

The phrase "class abilities" is used in any number of places; they're not always called "class features."

Character Advancement: Third, integrate all of the level's class abilities and then roll for additional hit points.

Skills: Skills can be further modified by a wide variety of sources—by your race, by a class ability, by equipment, by spell effects or magic items, and so on.

Retraining: If you are unsatisfied with a feat, skill, archetype, or class ability you chose, you may spend time in intense training to trade the old ability for a new one.

[darrenan]

Since it doesn't explicitly say 'class abilities', I would use the more general umbrella of any and all abilities.

More to the spirit of the path ability: why would they have a path ability that only works against NPCs that have class levels? I think the intention of the path ability is that bypasses anything that would normally prevent being flat-footed.