Moder is a boss with 7,500 health.
It takes extra damage from fire; frost and spirit do nothing to it at all. Blunt, slash and pierce land at full damage, so that is what to bring.
Its hardest hit is spit shotgun at 200 frost and 30 pierce, out of 5 attacks.
Some of what it throws is elemental, so frost resistance is worth having.
Of everything craftable, 
Thunderblood Crossbow, 
Lightning Strike and 
Staff of Embers put the most damage through what it resists.
It always drops 
Moder Trophy and 
Dragon Tear.
Moder's altar crowns a mountain summit. Vegvisirs wait in ruined stone towers near the peaks. She demands three 
Dragon Eggs from drake nests, and each egg weighs 200, so plan a trip per egg or wear the 
Megingjord from Haldor.
Moder alternates between air and ground. Airborne, she rains icicles across the arena. Grounded, she bites, claws and breathes a 30 meter beam of frost that hits for up to 200. She is immune to frost, weak to fire, and her aura forces the Freezing effect, so pack frost resistance and a stack of 
fire arrows. Fight her near cover, break line of sight when she takes off, and unload every time she lands. A 
Draugr Fang with fire arrows does honest work here.
The sailor's power. Ore runs and ocean crossings stop being a negotiation with the wind.
She drops Dragon Tears. They build the 
Artisan Table, which unlocks the blast furnace, the windmill and the rest of the Plains workshop tier.
With devcommands enabled, this spawns Moder in front of you. The third number is the level: 3 spawns a 2-star.
Creature ID: Dragon · all console commands and IDs