Boon of Master Warlock (5e Epic Boon)
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Boon of Master Warlock
Prerequisite: Level 20 warlock
Your patron has bestowed upon you a drop of magical power for your many years of service. You gain two 6th level spell slots and one 6th level spell from any spell list of your choice. After using these spell slots, you must finish a long rest before you can use them again.