WoWDB

Brewmaster Monks: http://ptr.wowdb.com/spells/145967-readiness
Guardian Druids: http://ptr.wowdb.com/spells/145962-readiness
Blood DKs: http://ptr.wowdb.com/spells/145958-readiness
Protection Warriors: http://ptr.wowdb.com/spells/145992-readiness
Protection Paladins:http://ptr.wowdb.com/spells/145976-readiness

The trinket features cooldown recovery for select class abilities.

Death Knight (blood)

•  Outbreak
•  Bone Shield
•  Vampiric Blood
•  Dancing Rune Weapon
•  Anti-Magic Shell
•  Icebound Fortitude

Druid (guardian)

•  Stampeding Roar
• http://www.wowdb.com/spells/106922-might-of-ursoc
•  Survival Instincts
•  Berserk
•  Barkskin
• http://www.wowdb.com/spells/102795-bear-hug

Monk (brewmaster)

•  Transcendence: Transfer
•  Zen Meditation
• http://www.wowdb.com/spells/115213-avert-harm
•  Guard
•  Fortifying Brew
• http://www.wowdb.com/spells/122057-clash

Paladin (protection)

•  Guardian of Ancient Kings
•  Avenging Wrath
•  Ardent Defender
•  Blessing of Protection
•  Divine Protection
•  Divine Shield

Warrior (protection)

•  Heroic Leap /  Heroic Leap (don't ask me why)
•  Recklessness
•  Demoralizing Shout
•  Shield Wall
•  Last Stand

See also:

DPS

• Agility:  Assurance of Consequence
• Strength:  Evil Eye of Galakras
• Intellect: No equivalent, but  Purified Bindings of Immerseus is your answer.

Healer: No equivalent, but  Prismatic Prison of Pride is your answer.

Tank: Vial of Living Corruption