Equal-Librium

You extend your hand and trace a sigil of Transmutation in the air, after doing this the caster selects a spell slot from lv 2-9 if the spell is available. and must take 1d10 damage for every level of spell slot and after doing this the caster regains the spell slot. If the caster does not have the spell slot they are attempting to regain then the caster loses their level 1 spell slot but nothing happens.