MTG Salvation

I apologize for the ambiguity, I was referring to Leyline of Sanctity. Your point is very well made though as far as the rest of your analysis and I greatly appreciate the input.

Leyline of Sanctity is much tougher to deal with, but if you play Empty the Warrens (which you almost definitely should in at least sideboard, I personally have one copy mainboard) you can overwhelm with goblins, which bypass Leyline.

If for some reason you don't have Empty or don't draw it, any bounce spell will do the job too, Echoing Truth being probably the most effective as it can bounce multiple Leylines (if that comes up).

I see a lot od decklists (even Caleb) run FoF in sb and there's no puzzles. What's the reason for that?

Instant speed, You choose any type of card, and the others fill the grave...

Now I'm watching some Strixhaven spoilers and I saw an interesting card.

First Day of Class

Ritual, ritual, ritual, First Day of Class, Empty the Warrens = 10 2/2 goblins with haste. Not bad.