A Reckoning

Neutral

[5.0] [quest=31488]
[5.0] [quest=31454]
[5.0] The Strength of One's Foes
[5.0] Trial of the Black Prince

Honored

[5.0] Fear Itself
[5.0] Breath of the Black Prince
[5.0] Incoming...

[5.1] The Measure of a Leader
[5.1] [quest=32474]
[5.1] The Prince's Pursuit

Revered

[5.1] The Lion Roars or Glory to the Horde
[5.1] A Change of Command
[5.1] Call of the Packmaster or The Soul of the Horde
[5.1] The Thunder King

[5.2] Meet Me Upstairs
[5.2] Secrets of the First Empire
[5.2] I Need a Champion

Exalted

[5.2] The Thunder Forge
[5.2] Spirit of the Storm Lord
[5.2] The Crown of Heaven
[5.2] Echoes of the Titans
[5.2] Heart of the Thunder King
[5.2] A Reckoning

[5.3] Celestial Blessings
[5.3] Cloak of Virtue
[5.3] Preparing to Strike

[5.4] A Timeless Discovery
[5.4] Secrets of the Timeless Isle
[5.4] The Emperor's Way
[5.4] A Pandaren Legend
[5.4] Judgment of the Black Prince

[These quests have been removed with Patch 6.0.3]

Yes. Today I learned WoWHead has a minimum character limit on comments.

This quest may have been an intermediate-wait-for-5.3-breadcrumb between Heart of the Thunder King and Celestial Blessings if you completed the former before patch 5.3 "Escalation", i.e. if you were really lucky with [item=94594]s.

I can't be sure, I was not that lucky, but this quest appears not to be in the game now.