Mind Caster

When casting spells, you can ignore the material component if its cost is insignificant. For spells that require a more valuable component, you apply the following rules:

• If the spell does not consume the component, when you cast the spell for the first time after a long rest, you gain levels of exhaustion equal to the material component cost / 100, minimum of 1, maximum of 5.
• If the spell consumes the component, you gain levels of exhaustion equal to the material component cost / 100, minimum of 1, maximum of 5.
• If the spell that you want to cast would take you past the 5th level of exhaustion, you cannot cast the spell.
• After completing a long rest, you must succeed in a Constitution saving throw against your spell DC. On a success, you regain 2 levels of exhaustion; otherwise, only 1.
• You cannot regain exhaustion levels by any means other than resting or by means of an action/spell from someone else other than you, or using an item, consumable or not.

You can still cast spells in the regular way using material components. When you use a material component, the above rules are ignored.