Jirel will grunt, unimpressed with herself when the tree troll would avoid both of her attacks. She'd manage to avoid it's counter-attack. At least the others have been able to sink their teeth into it. Jirel. Again! She could hear his demand in her mind.

Attack 1: 9 Damage: 6 + 2 Crit: 5 + 2?
Attack 2: 25 Damage: 8 + 2

(Awe fudge nuts, I did a dumb and edited the crit before the second attack. It was a 17 hit and 6 damage)

"When you're done with whatever you're doing we have to talk, ok?" Jezzika coo'ed in his mind.
"Not right now, darling, Jasun's busy!" he said out loud.
"T'Vauz will want his status report, you've been busy playing in the snow." she teased. "Fighting dollies."
"That is NOT-" he sighed, trying to focus. "My dear, later? The Elder Gods will get what they want, especially MY lord.." he said, just to get her to be quiet.
"Very well." she said. "You know the price for defiance or falsehoods, now." she giggled. "I'd hate to turn you into something horrible. Bye!"
"JhPfPh!" he grunted loudly. "You're not even MY Herald!!" he complained. "Jezzika? Jezzika!!"

"Jasun, stop talking to yourself and keep blasting the tree troll!" Sera shouts from the middle of combat.

Jasun made of face of embarrassment and frustration. She was right, of course, and his face wrinkled at being caught with such behavior.

Jirel(22),Zaf(18),Teb Knotten(16)(16),Jasun(10),Rose(5),Seraphina(1)

Jirel takes out most of it's health! And there are certainly worse voices to have in your head than Jezzika's.

That's what i'm sayin'.

Zaf reaches out, the chalice constellation on his chest glowing bright for a moment. A smaller one appears on Seraphina's back briefly, feeling her with the warmth of cosmic power, before it vanishes, leaving her more whole. "Enough is enough. Your time is done now, I'm afraid." Zaf breaks out the star map, firing another beam of star light straight for Teb's chest.

Bonus Action: Chalice Healing to Seraphina, restoring 6 HP.

Action: Cast (1st level)Star Bolt - Attack: 22 Damage: 12 of radiant at Teb Knottingham, Seventh in the line of Knottingham.

"Maybe the log fall is still affecting him now..." Rose considers for a moment after hearing Jasun talk to himself. "I should've checked his head more..."

"I'm fine!" Jasun calls out. "Just..It's nothing! Thank you."

Jirel(22),Zaf(18),Teb Knotten(16)(4),Jasun(10),Rose(5),Seraphina(1)

Teb attacks Jirel and Seraphina!

Jirel

Attack: 24 Damage: 12

Seraphina

Attack: 7 Damage: 8

The next attack on Teb has advantage.

Jirel will bite back a howl of pain as the tree troll lands a blow strong enough to gouge out half her life force.

See through the fog Jirel. Smack! AGAIN!

She’ll spit blood into the snow, tasting its familiar metallic flavour.

Sera growls and lashes out with her glaive.

Attack: 24 Damage: 9

Teb falls, allowing you all to move on to the next area. A bank of quill-like icicles spear outward in a ring, seemingly grown from a heavy sheet of ice covering the ground. A second ring of giant icicle-shaped monoliths stands inside the outer ring, surrounding a swirling cylindrical vortex easily ten feet in diameter. Icy winds and driving snow blast from the vortex, creating the wintry weather in the clearing. A surge of wind suddenly blasts from the swirling vortex in the ring of icicles, gusting outward in a stinging spray of snow and ice. Suddenly, a gaunt horseman with curling ram’s horns and wearing coal-black armor lurches through the portal astride a black warhorse, surrounded by tendrils of cold, dark mist. The rider slumps in the saddle, a shard of blue ice jutting from his back. As rider and mount come to a halt in the snow, the horse suddenly dissipates into black smoke, and the horseman falls to the ground with a groan, shifting into the form of an old man. He is mortally wounded and it is beyond any of your abilities to save him.

"What the hell..." Sera mutters, trying to figure out who the hell this guy is.

Arcana?: 8

If he's a fey, fiend, or undead, I have adv, so: 13

During the move on to the next area, Zaf makes certain expend as much of cosmic light's energy along the way to mend both his own, and others injuries suffered up to this point.

(@All: Anyone injured should be at full HP from challic healing over time)

'So this is the source?' Zaf thought as the group at least approached into easy view range of the ring of winter. Though he hardly saw it at first, having used both arms and wings to help shield off some of the snow and wind, hearing the body collapse, he lowered them enough and gasped at the sight. Wary yet feeling hurried by the bleak view, he picked his way over to kneel by the old man. "It's... it's going to be okay, my elderly friend. Honestly. T'is but a flesh wound." He chirped, hoping to ease him.

Deception: 19.

"Just need a little rest is all. Though before you do, what happened to you? What can you tell us about all this?" He asked softly, turning and cradling the man's head.

The rider doesn't seem too disturbed about his inevitable death and doesn't particularly seem affected by your attempts to ease him. The message that the man is attempting to relay to you takes priority over anything else. "I am one of the Black Riders of Baba Yaga. Every 100 years, she returns to the land of Irrisen to place a new daughter on the throne and we Black Riders are harbingers of her return. This year she was due to return to the land of Irrisen, but her daughter Queen Elvanna, has different plans. Baba Yaga has gone missing and Elvanna intends to replace her and go even further, using portals like this to turn Golarion into a kingdom of eternal winter, just like Irrisen. She is hunting down and slaying everyone loyal to Baba Yaga, including the Black Riders. The other two have been slain and I will follow them shortly. The power source for this portal lies in the Pale Tower in Irrisen. Disabling it will stop the spread of winter in this kingdom, but only the safe return of Baba Yaga will put a stop to Elvanna's plans for Golarion. You must find the Dancing Hut of Baba Yaga in Whitethrone. It has the power to travel between worlds and it can take you to her if you are able to master it."

He pulls out a lock of hair from the beard of a frost giant and a plague doctor's mask. "These are the keys to the Dancing Hut. Elvanna has stolen their power, but I can restore them with my blood. Once you have managed to find the hut, place these keys in the cauldron and the hut will retrace her path. Do you accept my mantle? Will you go through this portal into the land of Irrisen and save your world?"

"What an interesting turn of events." Jasun said, contemplating the Black Rider's words. "Sounds to me we have much more excitement coming up. I, for one, shall continue. By the will of the Elder Gods, I must."

Zaf winces and clutches at his head at the mention of Baba Yaga. "That name..." He murmurs, as the world mutes in color and dims in sound to him. During that time his talons dug gradually deeper into his skull, and eyes flickered a faint blue. As if in effort ot focus past it all, Zaf strained his hearing to keep listening until suddenly things are back to normal. Though clearly confused, he peels away red tipped talons, and hesitantly nod his agreement to the request in place of words.

The name Baba Yaga sounded familiar enough to the firbolg, but she just couldn't put her finger on it... "I-if it's the only way to end this winter..." Rose says in contemplation of the riders words. "Then I suppose I must continue then."

"Very well then. I hereby pass on the Mantle of the Black Rider to the five of you. You will now receive the power you need to complete this great mission, as well as the ability to pass through the wards around the Dancing Hut. And I will spend the last of my power to bring the magic back into these sacred keys." The Black Rider cuts his own throat and allows the blood to pour over the keys. His robes melt away like ice in a fire, leaving an aged man in a simple tunic. Simultaneously, you all feel a power build within you, as well as an incredible compulsion.

(Mechanically speaking, you may all add +2 to an ability score of your choosing, but you are also affected by geas. This can only be removed by the successful completion of the quest, a casting of wish on each of you, or by dying. Fortunately, the writers of this campaign were merciful and you will only suffer the negative affects of geas if you do something that blatantly shirks your responsibilities, like taking a few weeks to write that trilogy you were always talking about.)