Wow Classic, OP Weapon Glitches (Patreon)

There has been a very interesting thread on the bug report forums about the Runeblade of Baron Rivendare   https://us.forums.blizzard.com/en/wow/t/runeblade-of-baron-rivendare/375231    

This is an unusually lucid and detailed thread which explains how melee classes can gain over-powered healing from the Runeblade by snapshotting gear optimized for healing and then switching it for their normal gear. 

Additionally there is a report concerning the item Hand Of Justice https://classic.wowhead.com/item=11815/hand-of-justice . The method here is much more simply to apply.  If you use the macro, 

/startattack

/stopattack

while attacking, when the weapon procs, instead of doing a single extra attack, it will perform two additional attacks.