Reckoning
Reckoning is a Paladin spell in the WoW Forever client.
Gives you a 8% chance after Blocking and a 20% chance after receiving a non-periodic critical strike to gain an extra attack. Stores up to 4 extra attacks. Cannot occur from Blocks more than once every 1.5 sec.
Data from the WoW Forever client, build 1.60.1.70862, extracted .