Uncanny Dodge. Sans can take the dodge action as a bonus action once per turn.

Karma. When someone of Sans' choice is within 5 ft. of Sans, they take 10 (4d4) radiant damage.

Pacifist. Sans will only attack someone if they attack him or one of his allies.

Evasive Taunt. Sans adds his Charisma modifier to his AC.

Blink. Sans magically teleports, along with any equipment he is wearing or carrying, up to 120 feet into an unoccupied space that he can see.

Bone Rush. Ranged Weapon Attack: +8 to hit, range 25/75 ft., one target. Hit: 9 (2d8) piercing damage.

Gaster Blaster (Recharge 5-6). Sans fires radiant energy in a 30 ft. line that is 5 ft. wide. Each creature in that line must make a DC 16 Dexterity saving throw, taking 19 (3d12) radiant damage on a hit, or half as much on a success.

Telekinetic Thrust. Sans targets a creature or unattended object within 20 ft. of him. A creature must be medium or smaller to be affected by this magic, and an object can weigh up to 150 pounds. If the target is a creature, Sans makes a charisma check against the target's strength check, tossing them up 30 feet in any direction, including up, if Sans wins the check. If the target hits a hard surface, then they take 1d8 bludgeoning damage for every 10 feet they move. If the target is an object, then it can be used as a thrown weapon  (Range 30 ft. +8 to hit, 7 [3d4] bludgeoning damage on a hit.)