Focus Cast Key for just one button?

[Elvenbane-veknilash (Elvenbane)]

#showtooltip
/cast [mod:ctrl,@focus,harm,nodead] [] Soul Swap

CTRL casts on a harmful focus, if you have one
DEFAULT casts on your current target

If you also want CTRL to set your focus, if you don’t have one.

@Elvenbane-veknilash

Conditional Focus Cast

Shift: Clear Focus
Alt: Set/Cast on Focus
Default: Cast on Target

#showtooltip
/focus [mod:alt,@focus,dead] [mod:alt,@focus,noexists]
/clearfocus [@focus,dead] [mod:alt,@focus,noexists] [mod:shift]
/cast [mod:alt,@focus,exists] [] SPELL

Gets tweaked to

#showtooltip
/focus [mod:ctrl,@focus,dead] [mod:ctrl,@focus,noexists]
/clearfocus [@focus,dead] [mod:ctrl,@focus,noexists]
/cast [mod:ctrl,@focus,harm,nodead] [] Soul Swap