Priest ability · learned at level 20 · Holy

Elune's Grace

3% of base Mana

Instant5 min cooldown

Reduces the chance you'll be hit by melee and ranged attacks by 50% for 15 sec or until you are missed 3 times.

Game files · build 1.60.1.70245Read from the WoW Forever beta client, build 1.60.1.70245.

Compared with Classic

Classic tooltip

Reduces ranged damage taken by 21 and increases chance to dodge by 10% for 15 sec.

Data	Classic	Forever
effect 1 aura	aura (113)	aura (184)
effect 1 value	-21	-50
effect 2 aura	aura (49)	aura (185)
effect 2 spell power coefficient	1	0
effect 2 value	10	-50
cost	60	0
cost (% of base)	0	3

What Blizzard said about Elune's Grace, each line checked against the files.

Matches the files
Priest Racial Abilities: Each race of Priest has two spells unique to their Race. They have been fully re-evaluated, and new ones have been added for Gnome Priests:
The files Each priest race has exactly two race-locked spells in 70245: Human Feedback and Divine Grace, Dwarf Desperate Prayer and Chastise, Night Elf Starshards and Elune's Grace, Troll Hex of Weakness and Shadowguard, Undead Touch of Weakness and Dark Sacrifice, Gnome Confounding Flash and Contingency Plan (skill line race masks). Classic Era had no Gnome priest spells.
Feedback Divine Grace Desperate Prayer Chastise Starshards Elune's Grace Hex of Weakness Shadowguard Touch of Weakness Dark Sacrifice Confounding Flash Contingency Plan Class deep dives: Priest and Warrior
Matches the files
Elune’s Grace: Still learned at level 20. Now reduces the chance for melee and ranged attacks to hit the Priest by 50% for 15 seconds or until 3 attacks have missed. 5-minute cooldown.
The files Learned at level 20 (2651). The tooltip cuts melee and ranged hit chance against you by 50% for 15 sec or until you're missed 3 times, on a 5 min cooldown.
Elune's Grace Class deep dives: Priest and Warrior

69876 Sep 16First beta build we archived. No changes in the client files since.