Prerequisite: Class (Warlock)
You’ve done something to anger your patron. As punishment they occasionally revoke some of their gifted power, leaving you to fend for yourself and reflect on your actions.
When you cast a leveled spell using one of your Warlock pact slots, roll your Mastery dice. If the result is a 1, your available spell slots are immediately reduced by 1, down to a minimum of 1. You regain this spell slot when you take a short rest. Once you lose a spell slot in this way, you cannot lose it again until you take a long rest.
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