Deep Freeze Rune 

Stuns the target for 5 sec. Can only be used on frozen targets. Inflicts [462 * (13.828124 + 0.018012 * 60 + 0.044141 * 60 * 60) / 100 * (1)]803.032 to [538 * (13.828124 + 0.018012 * 60 + 0.044141 * 60 * 60) / 100 * (1)]935.132 damage to targets immune to stun permanently.

Step by Step Guide

To obtain the Deep Freeze rune in Phase 3, you'll need to collect a total of 25 books from various zones, similar to how you acquired the Spell Power rune in Phase 2 and the Icy Veins rune in Phase 1. Your progress will include the books you've gathered in previous phases, which will count toward your total.

Here are the eight new books added in Phase 3, along with their respective locations:

1. The Liminal and the Arcane (in Feralas):

2. A Mind of Metal (in Searing Gorge):

3. Legends of the Tidesages (in Tanaris):

4. Venomous Journeys (in The Hinterlands):

5. Everyday Etiquette (in Azshara):

6. Stonewrought Design (in Blackrock Depths): You can find the Stonewrought Design in Blackrock Depths, on the altar where you can find Franclorn Forgewright (he starts the quest for the Shadowforge Key).

7. Conjurer's Codex (in Blasted Lands):

8. Sanguine Sorcery (in Swamp of Sorrows):

Make sure to explore these zones thoroughly to locate and collect the necessary books. Once you've gathered a total of 25 books from the provided list, you'll unlock the Deep Freeze rune. Happy hunting!