Excal-heim
Scythe. Melee Weapon Attack: +7 to hit, reach 10ft, one target. Hit: 10 1d10+5 slashing damage.
On 10 or more damage, the target must succeed on a con save, gaining 1 level of exhaustion on a fail. DC 10 + 1/2 damage dealt.
Neck Swipe (recharge 4-5). Melee Weapon Art: +7 to hit, reach 10ft., one target. Hit: 2d10+5 Piercing damage.
Upon dealing at least 20 damage, the target must succeed on a con save or gain 3 levels of exhaustion. DC is 8 + 1/2 damage dealt.
Revolver. Ranged Weapon Attack: +3 to hit, range 60/120, one target. Hit: 7 1d8+3 pirecing damage.
Selfless nature. Grave knight can throw himself into the way of an oncoming ranged attack to protect someone else. doing so will cause him to automatically fail any saving throws, and his ac will be considered 0 for the attack.