It might take a split second longer to do, but I click targets when it really really matters.
You can set up a key for setting your focus, then a key to target the target of your focus. Keep in mind the person of your focus and make mistakes too. All this can be done in the key bindings and don’t forget you can use the shift, control and alt keys for modifiers.
As a mage, get a nameplate addon that shows your execute threshold for searing touch either with a line on the bar showing it or colors to show targets near or in execute range. I’d link the plater profile I use, but I can’t remember which one it is, and I’ve modified it a lot to stop the nameplates from overlapping too much and to emphasize certain mobs and casts.
There’s not really a better solution than just clicking the nameplates, you’ll have to do that. I know some mages swap focus to targets near death and use a focus scorch macro, but I don’t even bother with that and instead use a mouseover focus and focus Counterspell macro.
I never knew that! That’s really surprising I just thought it would make your toon hit the new target instead.
Well, a good melee will interrupt, but sometimes its on cd, and then sometimes people tunnel. You may not always be the top in dps, but if you interrupt you can prevent a wipe.