Given some of the above there is another angle you could approach this with.
I haven't seen much with astrologian that involves them actually throwing the cards so  you have a lot of wiggle room for the mechanics here.
It could be conjuration on a subconscious level. Â Yes, the character has an astro globe and may even believe that they're using astrologian's unaspected magic. Â Drawing on surrounding aether to make the elemental ice around the thrown projectile of the card.
This could leave you some hooks later for having the character explore conjuration as well. We're not fixed to a single talent pool mechanically in the game.
I haven't seen much with astrologian that involves them actually throwing the cards so  you have a lot of wiggle room for the mechanics here.
It could be conjuration on a subconscious level. Â Yes, the character has an astro globe and may even believe that they're using astrologian's unaspected magic. Â Drawing on surrounding aether to make the elemental ice around the thrown projectile of the card.
This could leave you some hooks later for having the character explore conjuration as well. We're not fixed to a single talent pool mechanically in the game.
