Undying Sentinel

Spectral Resilience: The Undying Sentinel has resistance to all damage from non-magical weapons.

1. Multiattack: The Undying Sentinel makes two attacks with its Reaper's Scythe.

2. Reaper's Scythe: Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 10 (1d10 + 4) slashing damage plus 7 (2d6) necrotic damage. If the target is a creature, it must succeed on a DC 15 Constitution saving throw or suffer from a lingering necrotic effect. At the start of each of its turns, the creature takes 5 (1d10) necrotic damage for 1 minute. The creature can repeat the saving throw at the end of each of its turns, ending the effect on a success.

3. Summon Shadows (Recharge 5-6): The Undying Sentinel summons 2d4 shadows. The shadows appear in unoccupied spaces within 30 feet of the Undying Sentinel and act immediately after it in the initiative order. These shadows vanish after 1 minute or when reduced to 0 hit points.

Bonus Action: Shadow Surge (1/Day): The Undying Sentinel channels its dark powers, causing shadows to writhe and twist around it. Until the start of its next turn, the Undying Sentinel gains advantage on all attack rolls and can move through other creatures and objects as if they were difficult terrain, without taking damage. Additionally, any enemy that starts its turn within 10 feet of the Undying Sentinel takes 5 (1d10) necrotic damage.

Ethereal Shift (Recharge 5-6): As a reaction when the Undying Sentinel takes damage, it can phase out of reality, becoming incorporeal until the start of its next turn. During this time, it gains resistance to all damage.

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