His Eminence's Glory

Epic Boon Feat (Prerequisite: Level 19+ and one of your stats is at least 20)

You gain the following benefits.

Glorious Presence. On your first turn in combat or after killing an enemy, you can exert your Glorious Presence, forcing everyone within 30ft. of you to make a Wisdom saving throw. On a success, the target cannot be affected by this feature for 24 hours. On a failure, the target has Disadvantage on saving throws against being charmed or frightened by you, and you have Advantage on attacks against them for 1 minute. If an affected creature is charmed or frightened by you, the maximum length of time they can be affected for increases by 24 hours, and during this time, they have Disadvantage on saving throws to end the condition and do not count against the maximum number of creatures that you can target with any spells or features, unless they are incapacitated or dead. Once you use this benefit, you can't use it again until you roll initiative.

Influential Aura. When you or another creature within 60 feet of you succeeds on or fails a D20 Test, you can reroll it with Advantage or Disadvantage (your choice) and possibly change the outcome. Once you use this benefit, you can’t use it again until you roll Initiative or finish a Short or Long Rest, unless you expend a spell slot of 3+ as a reaction to the roll's outcome to replenish your use of it.