Disorient him and run (Mind-aligned female anthro)

You look down at the knight riding across the bridge towards you. He’s pretty average-looking, for a knight. He wears a chainmail shirt and hood, along with a green and white tabard, and a pair of tall leather riding boots. In one hand, he holds a lance, in the other, a shield. He rides a dappled horse.

You start to move your fingers together, in a convoluted pattern. Your purple scales start to glow at the edges, turning almost pink, as you work your magic.

As he reaches the end of the bridge, you bring your hands up to your mouth and breathe out through them, sending a cloud of glimmering purple dust through the air towards him. He walks right into it, and staggers, clutching his head as he looks around.

Excellent. He has no resistance to your mental abilities, so the Disorient spell he just walked into should keep him occupied for a good few hours, long enough for you to clear out.

You step back into the tower, and head down the stairs. You’ve never kept anything in the rooms, instead everything of value has been kept in the pocket dimension the tower is linked to. You recite a small incantation, and step through what was a solid wall a few moments ago.

In the pocket dimension, you start to pack your possessions. It’s actually quite a meagre hoard, certainly nothing like the mountains of gold normally associated with dragons, but even so it’s too big for you to take all of it.

You step back and glare at your treasure. You have a pile of old grimoires, a small pile of silver and precious gemstones, and an array of magical trinkets, as well as the magic staff you can carry with you, and only one bag to carry it in.

You’ll have to sacrifice something... but what?