The Valley of Ends

Stepping back a bit "Why would someone do this?"

"Enemy are plenty," Mimer replied, "No. Necromancer. In the Legion. Killed by rule of law,"   

Does gotch know of any way to trace the magic to its source?

"Well that makes sense why a necromancer would be trying to take down your outpost... maybe you killed him in his life and he's come back in undeath to get revenge."

no, Gotch is unable to trace the magic to it's source. Can give me arcana check to try and determine which spell it is through. 

Arcana:  7

If advantage since he is a Conjuration wizard... 14

Take the better of the two if advantage.

Gotch goes through his mind, searching through his knowledge of spells but the answer seems to evade him. He is quick to determine it's an arcane spell rather a divine or natural spell (means he knows a wizard did it, not a cleric or druid or similar) but the answer of spell itself slips away from him. 

Mimer looks around at the party then slapping their side before pointing to sun (it's around afternoon right now), "Night. Coming," Mimer states before turn and starts the trek back to the town.He moved ahead and disappears over the hill top. After a few moments, you need raven gawking followed by a cry of "Undead!" As the party rushes over the hill, you find 6 Zombies and 4 skeleton emerging from the ground, one had grabbed Mimer, who was stabbing at the skeleton with a dagger that had grabbed ahold of the bird's talon. 

Roll Initiative

MImer: 16

Skeleton: 10

Zombie: 3

Initiative Order

Onyx -25
Mimer - 19
Raynor - 10
Zombie - 10
Lyrant - 9
Skeleton - 3
Gotch - 5

10  Raynor

Lyrant 9

18 Onyx draws a scimitar(main hand) and a short sword(offhand)

Onyx will rush to aid Mlmer (40 ft + Feline agility if necessary.).

While closeing the distance between him and the skeletons, he will cast hunters mark on the skeleton grappling the Kenku.

Attack: 27 Damage: 18 slashing

Attack: 15 Damage: 15 slashing (Dreadambusher) + 3 hunters mark if i have to hit the first skeleton again.

Gotch initiative: 5

Onyx charges out to Mimer's aid, his blade shatters the first skeleton's skull before turning and striking the second skeleton, the scimitar cutting through the spine of the undead. Both skeleton's bones scatters across the ground. 

As Mimer kicks off the unanimated hand from it's leg and pulls a shortbow, taking a shot at the zombie before moving closer to the city. 

Attack: 6 Damage: 9

Situation
Zombie horde isn't that far away from party, about 20ft down the slope. Skeleton came out 10ft to the side of the zombie horde so Onyx and Mimer are not enaged withe zombies.

Next Up
Raynor
Zombie

(Others can post their actions in advance if they want) 

Ngl my first instinct was to Turn Undead, but we might need it against the ghouls at night.

Lyrant will attack one of the skeletons with her hammer.

Attack: 7 Damage: 7

((Edit: Pathetic. I have a +3 to hit so that nat 1 is a major whiff))

Pointing at the closest zombie Raynor will whisper into his hands before opening his palms towards it casting Dissonant Whispers

OOC: Wis save 13

11

Gotch shoots with his crossbow...

to hit: 13

Damage: 5

He continues moving towards town.

Raynor hurls his unique brand of attack at the nearest zombie #6. The zombie restreats away from Raynor as reaction in it's momentarily fear.

Wis Save: 15

The zombies shambles away from each other. 2 coming for Onyx, 1 for Lyrant, 2 for Mimer but he's out of their travel distance and one 1 heading for Raynor.

Onyx Attack: 4 Damage: 4 Bludgeoning (Shielded)

Onyx Attack: 13 Damage: 3 Bludgeoning (Shielded)

Lyrant Attack: 4 Damage: 4 Bludgeoning

Raynor Attack: 7 Damage: 7 Bludgeoning

With a Zombie in her face, Lyrant swings her hammer but in her haste, swings widly to the side.  

Gotchon the other hand starts circling around the zombie while heading town ward, shooting a shot from his crossbow and striking the hird zombie who was chashing Mimer. 

Situation
#1 and #2 zombies engaged with Onyx, #3, #4 moving towards Mimer, #5 enaged with Lyrant, #6 moving  towards with Raynor.

Next up is

Onyx
Mimer
Raynor

How about number 3.

That is a miss on Lyrant. On her next turn, she will attack the zombie that is engaged with her, #5.

Onyx will use the lantern to cast shield, to deflect the two attacks.