If you turned in all 16 of the books from Phase 1 for the Icy Veins Rune, you'll only need to turn in 4 more. There are now 24 Mage books in total, 8 of which were added in Phase 2 of SoD.
Engrave your chest with the Burnout rune: Increases your spell critical strike chance with all spells by 15%, but your non-periodic spell critical strikes now have an additional mana cost of 1% of ...
Some runes will be recognisable spells while others are new. You'll find the WoW SoD Phase 2 runes listed below, and we’ll update this list with their locations once they’re found. Here are ...
One of the most extreme examples of this is the Metamorphosis Rune for Warlocks ... changing how many of their spells work, and allowing them to fulfill the tanking role in parties.