Kingdoms of Amalur: Reckoning Factions Walkthrough Part 22 – Scholia Arcana Part 4: Shardfall
Head for Emaire in the western portion of the Forsaken Plains. Head into the Edmure home to find your contact here. He will explain what has happened in the Shardfall cavern and that it is unnaturally cold in there now at present. He will ask you to hunt a Paragon Barghest to collect its heart to complete a talisman. With it you will be able to enter Shardfall to find the cause (and the fate of Edmure's Assistant).
Head north, out of the village. The Paragon Barghest is well to the north from the village. Defeat it and return to Emure. He will craft the talisman you will need. Equip it and head into the Cradle of Summer. Shardfall is in the western portion it.
Shardfall
Equip the Pendant of Warmth and head on inside. Head south then turn west as soon as you can. At that turn, expect to encounter group of Sprites with a Frost Champion. Defeat them and continue on. As that path bends north, you will encounter a bear. As that same path goes south and west, you will find a pair of wolves waiting for you. Keep to the left-hand side of this corridor to avoid the two Frost Mines that line it. While they do damage, the slowdown can be very annoying and fatal in an intense confrontation.
In the next chamber you will encounter four wolves. Defeat them to continue to the west and follow it as it works to the north. Again, keep to the left-hand side to avoid the ice mines in the corridor. When it broadens by a number of Frost mines, you will need to fight a group of Sprites with a Frost Champion in their ranks. There are four total. Now head north, favoring the right for the next turns to avoid the pair of Frost Traps in the area.
The next chamber is somewhat challenging as a Mountain Troll patrols it with four Frost Mines in the center in the gylph. Once you beat it, continue to the north. When the path broadens, you will be fighting another Bear and pair of wolves. Head north and go east. Dash the path as it turns east to avoid getting hit by the Frost Mines in the corridor. When you reach the next glyph you will find Donnel Cutty's corpse. Loot it to gather some evidence of his fate. Now head to the south and use the jump point to reach the person hiding in Shardfall. You will find Cadoc Reen and the spirit within him.
Cadoc Reen
This one will attack you with largely Frost Spells. When they hit you, they will slow you down. It does not help any that Cadoc Reen will summon Sprites with a Frost Champion to his aid. If you have any fire elemental attacks or weapons, this is the time to use them to ensure a quick battle.
Loot the body afterward to get some nice rewards and the Frost Stone. Again, it is time to return to Engar in Rathir. Head to the south from here and use the Jump point to quickly reach the exit. Just outside Edmure will be waiting for you. Choose the Donnel Cutty dialogue option to pass him the ring and get the Gemcutter's Wraps. Fast Travel and head to the Scholia Arcana in the Upper City of Rathir. Talk with Eran Methneen, who will give you a ring and a note.