Enoch attempts to use Silent Image to further obscure the signs of the enchanted snare. He thinks about it for a moment, then includes a thin yellow arrow along the middle of it to guide Grizzle, when the time comes.

Grizzle wanders out of his shrub, followed by a giant rat.

"Okay now Jimmy, remember the plan? Skitter down that way, and when Hoot-Growl sees, run back this way, but don't get trapped! Mister Enoch made arrow so don't walk into trap, that's for Hoot-Growl."

Seiren stares at the giant rat then at Grizzle then back at the rat and repeat. "... Hi, Jimmy." She waits for the others to get into a hiding spot and nods at Grizzle. "I believe the saying is 'people who aren't me first'." She gestures at the cave. "I'll be right behind you."

(.... Stealth check: 18)
(edit: are u kidding me...)

"Jimmy, this is Seiren, she has cool metal parts, but it's rude to ask about them too much, so be polite."

"And Enoch made the yellow arrow, and Ezri made the trap, and that's Kane - yes, he's red and has horns, but we don't talk about that."

Seiren shakes her head and smiles slightly at Grizzle's words. "Nice to meet you, Jimmy." With her earlier Stealth check, she creeps into the cave then casts Message when within 120 feet of the owlbear but not within line of sight (since it can go around corners) and makes... wolf sounds? Wolves are owlbear prey. Let's go with that. After she finishes casting it, she scrams.

The barking, screaming, and rat were more than enough to draw the owlbear out. It would chase the Giant Rat, into the direction that it heard the other two sounds, and found itself snared by the characters trap. The giant owl attempted to break free, but was unable to move much besides a little wiggling. The characters seemed to have some time to investigate the runes/escape.

"Good job, Jimmy! Go look at runes?"

Grizzle and Jimmy skip up to check out the runes. 

Arcana: 5

"Well, whatcha think, Jimmy? Yes, Grizzle think so too."

"Snap peas, Grizzle meant an owlbear!" Ezri steps back further from the wriggling owlbear. She starts to cast Mold Earth along with Enoch, to start digging the pit. "Best be quick about this, it won't be pleased when it escapes."

Seiren also goes to investigate the runes with Grizzle because she has nothing to help with trapping an owlbear more than twice her size.

(Arcana: 9)
(sigh.)

Kane wastes no time and runs over to the runes. 
Arcana: 17

"You go deep! I'll start on wide!" Enoch goes to with vigorous casting, book held open before him as his eyes unfocus, reciting the spell over and over again for as long as the trap lasts. Incidentally, he cannot help but begin to absorb the terrifying appearance of the trapped monster, the blade-like claws, the narrow beak, the hateful eyes and the grating, unnervingly blended tonal growl. After widening the pit, he redoubles his efforts to maintain a similar depth with Ezri, Dirt flying up from beneath the floating creature in a mineral fountain.

As the owlbear began to fall into the hole being dug, Kane was the only one who realized the true nature of the runes. They were dwarfen runes, enchanted with some kind of spell, with a dwarfen inscription on the wall. The runes themselves seemed to be in a way that didn’t spell anything out, but the inscription had two passages on it.

Grizzle scratches himself and Jimmy while Kane looks at the runes.

"Jimmy, when Grizzle throw the stick, go get it, okay?" 

He tosses a small stick for Jimmy.

While Jimmy is playing with the stick, Grizzle pulls something from a pouch at his side and tosses it at the runes.

 A huge giant elk fills the space.

"Hi Bill! Do you know what these runes mean?" ,  he asks the giant elk.

Kane, upon seeing the runes, grabs a notebook from his satchel and writes them down for future reference. He calls out, “They are Dwarven runes, but I can’t make any sense of them!”

Enoch spares a moment to be puzzled at Grizzle's display of magic, then returns to his efforts in digging. "If anyone reads Dwarf Runes, go to Kane now!"

It takes Seiren a moment, but she blinks and raises her hand, rushing over to Kane. “I can read Dwarvish!” She waits by his side for him to show the notebook to her instead of peering into his space.

Kane shows her the notebook and goes over to the wall with the runes. “Note that there are two passages...and I believe these runes have some sort of magic on them. I can’t tell what kind.”

Grizzle tells Bill the Giant Elk to back up.

Seiren quickly reads over the runes, translating them in her mind. She holds a hand out to Kane to borrow his notebook and writing utensil if he'll let her. "I don't want to read them out loud in case I accidentally trigger anything by doing so. May I borrow that? If we have time, which I'm doubtful because that owlbear won't be preoccupied for too long, Ezri can possibly do a Detect Magic to see what magic is in these. But that might not be necessary once I translate them."