Special Perks from Questing (SE)

Introduction

Completing the Main Quest, DLC Main Quests, faction/guild quest lines, and some other miscellaneous quests grants the player some perks which may be passive Abilities or usable Powers or Spells. Powers granted may be Greater Powers (usable only once in every 24 in-game hours) or Lesser Powers (usable at will). Perks are added automatically for quests completed before installing this mod.

This is an extension of perks-as-quest-rewards feature which exists in the game for some minor quests, some of these rewards are: Prowler's Profit, Gift of the Gab, Sinderion's Serendipity, Sailor's Repose, Ancient Knowledge, Agent of Mara, Agent of Dibella, and powers like Summon Spectral Assassin.

Legendary Edition mod available here

Xbox edition on Bethesda.net

PS4 edition on Bethesda.net (a few differences due to asset restrictions)

Mod Details

All added perks and abilities will be listed in the Active Effects Menu, and if you use the mod SkyUI you can sort this menu by Source so that all the added perks are listed together.

This mod can be installed mid-game, and the perks and powers are retroactive, so you can install this mod on an existing save-game where quests have been completed.

The added abilities and powers are balanced as per the length, difficulty, and "importance" of the quest line. For example the powers and perks gained from the Main Quest and Dragonborn DLC are stronger than those gained from the defeating Potema or destroying the Dark Brotherhood.

Following is the comprehensive list of all added perks and powers and their effects:

Main Quests

Main Quest: Grants the Dragonslayer Passive Ability

The Dovahkiin has vanquished Alduin and ended the Dragon crisis. Shouting in combat staggers nearby enemies. Weapons and Thu'um deal 15% more damage to Dragons.

The stagger effect applies on hostile people, creatures, and even Dragons whenever you use your Thu'um.

Civil War - Imperials: Grants the Legate Passive Ability

The hardships and trials of war have tempered the Hero of Skyrim, giving a permanent bonus of 20 to Carry Weight, Stamina, and Magicka. Friendly people nearby have their armor increased by 30 points in combat.