I always use tremors on round robin and they are the first totems i drop in 95% of the cases.

I use wrath of air on my main and grounding on the 4 others in normal bgs while i do arena i drop wrath totaly.

I drop 2 healing,1 mana,1 poison cleansing and 1 disease cleansing totem (Actually did put in the very early in the game due to some pve encounter and havent changed it back since i soon face DK anyway)

What if you only want your groundings renwed?

Dropping searings out randomly isnt always smart, atleast not in AV!

5 searings dropped by aid station actually pulls nearly all the npc's!