I think we went a bit wrong on the unleash card, so
I'm asking for a quick explanation. It says 'All foes',
does this mean all all enemies discard active element cards and apply FX or do you yourself discard all active element cards and apply FX?
It's a tricky card. Unleash applies to All Foes. Meaning, you personally will discard all active element spells, and apply their effects to all foes (except for ones that specifically state to apply to yourself like earth and water).
If you had a full set of 6 elements, the effects to be applied to your enemies would be:
+2 HP to Self
+2 EP to self
-1 EP to foes (ice gives -2 but lightning gives +1)
Deactivate 3 random cards
Discard 1 random card
(it's best to not have lightning active if you use unleash to maximize ice's FX).
Does that answer your question? I apologize if you're still confused.