[quote=@ravenDivinity]
What sort of abilities could one get when combining aether with ice or with water? I know what aether may be used for on its own, but not what aether may do when it is paired with another element.
[/quote]

Hmm... I can't immediately think of any ways to combine Cold or Water with mind or spacetime magic. On the other hand, Aether also deals with magical energy itself (I'll update the element description to match). So... Here are some ideas.

Aether + Cold: An energy that freezes up the circulation of magic in the afflicted area, making magic harder to use. May also slow down and damage energy-based beings.

Aether + Water: A magical liquid that efficiently conducts many different kinds of magical energies. Allows for different energy types to be dissolved into the liquid to give it different properties.

Aether + Ice: Similar to the magical liquid above, except the energies are preserved in a crystal of frozen magical liquid. Crystals containing defensive energy types could be used as shields, and ones containing offensive energy types could be used as bombs, or something like that.

Those are just some rough ideas.