Scene 3 - The Ardeyn Run

Not even close.
In game terms, this is a Long distance. A Short distance is greater than Immediate but less than 15m (50 feet). An Immediate distance within reach or a few steps, but no more than 3m (10 feet).

A character can move an Immediate distance as part of another action, a Short distance as the entire action for a turn, and can try to move a Long distance as the entire action perhaps with a check to avoid slips, trips, or stumbles.

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Duke needs to make an attack roll, and spend the Intellect points to activate Nature's Wrath.

Katyushka runs the Long distance, but her attack misses by a lot. The creature is very fast and hard to hit, and considerably dangerous because of that.

Exactly so, you can manifest it right away with no roll, and spend an action next time to get it to do stuff. The very nature of it manifesting (which you can do anywhere within Long range) is potentially distracting so make a check now anyway and describe what happens.

Seth's magical attack strikes the creature, damaging it for 4 damage.

The Rock monster runs up to an immediate distance to the creature.

Micah successfully summons the creature image as desired. Summary: Duke and Seth attached from Long range, Vinny and Katyu team up to melee range, and Micah summoned an illusion from range.

The creature, which from up close appears to be a lizard sprouting extra insectoid legs from seeping wounds, turns and attacks Katyushka who should make a Speed Defense roll.

The creature bites Katyushka for 5 damage.

Everyone may act again.

Duke watches the creature and moves to get a line of sight to attempt his attack again.

"Ah come on now, what you want a piece o' jerky or something?" he bargains with the plant before trying to get it to spit out another barrage.

Dukes attack miss but Vinnys attack hits. The natural 17 equates to +1 damage.