Devotion Mechanics Question - Binding Skills

[malawiglenn]

Have a look at this guide Devotions: A how-to on maximizing them

I went for Ghoul early on and I bound Flame Touched. I also see some builds recommend binding Vindictive Flame

It does not matter, bind ghoul to any permanent togglebuff

and then why wouldn’t you bind something like Fire Strike or an analogous weapon replacer like that

Fire strike is not a permanent togglebuff so you can not bind ghoul to it.