I have two test of might traits at this moment in this and at that point I was told you should only use slam if you have over 60 rage in order to pool for Colossus Smash.
In the icy veins guide it prioritizes overpower over slam, does that include when I'm about to be rage capped and waste rage? I tend to have a TON of overpower procs to spend so this is pretty important to me so I don't waste dps.