Bethany Heart (Level 20)

Indomitable (3/Long Rest). Bethany rerolls a saving throw she failed, and must use the new roll.

Arcane-Charged Action Surge (2/Short Rest). Bethany takes an additional action on her turn. She can teleport up to 30 feet to an unoccupied space she can see before or after the Action Surge.

Eldritch Strike. When Bethany hits a creature with a weapon attack, that creature has disadvantage on the next saving throw it makes against a spell she casts before the end of her next turn.

Weapon Bond. Bethany cannot be disarmed of her Lightning Tongue Greatsword or Uzi unless she is incapacitated. If either weapon is on the same plane of existence as her, she can use a bonus action to have it teleport to one of her free hands. She can teleport only one weapon at a time.

Water Vulnerability. Bethany's flesh dissolves when in contact with water due to being half-borderworlder. Bethany takes 20 acid damage the first time on her turn she is submerged in water, and when she ends her turn submerged in water, unless her skin is completely encased against it. She takes 10 acid damage if any of her exposed skin is splashed or otherwise makes contact with half a gallon of water, and 1d4 acid damage if splashed with any less amount of water. Substances that are made up of half or less water, such as syrup, don't trigger this trait.

Innate Spellcasting (Half-Borderworlder). Bethany's innate spellcasting ability is Intelligence (spell save DC 18, +10 to hit with spell attacks). She can innately cast the following spells, requiring no material components:

Cantrips (at will): Shocking Grasp

3/day each: Jump,* Misty Step, Witch Bolt

2/day: Dimension Door

1/day: Plane Shift (self only)

Spellcasting (Eldritch Knight). Bethany is a 20th-level spellcaster. Her spellcasting ability is Intelligence (spell save DC 18, +10 to hit with spell attacks). She has the following wizard spells prepared:

Cantrips (at will): Booming Blade, Fire Bolt, Lightning Lure

1st level (4 slots): Shield, Longstrider*, Cause Fear

2nd level (3 slots): Misty Step, Mirror Image*, Hold Person

3rd level (3 slots): Haste, Fireball, Fear

4th level (1 slot): Elemental Bane

*Bethany casts these spells on herself before combat, if possible.

Multiattack. Bethany makes four attacks on her turn.

Lightning Tongue Greatsword. Melee Weapon Attack: +12 to hit, reach 5 ft., one target. Hit: 10 (2d6 + 6) slashing damage, plus 7 (2d6) lightning damage while alight.

Uzi. Ranged Weapon Attack: +10 to hit, range 80/240 ft., one target. Hit: 13 (2d8 + 4) piercing damage. 

Uzi - Burst Fire. Each creature within a 10-foot cube that Bethany can see within 80 feet must make a DC 15 Dexterity saving throw or take 13 (2d8 + 4) piercing damage

Second Wind (1/Short Rest). Bethany regains 26 (1d10 + 20) hit points.

Improved War Magic. When Bethany uses her action to [Tooltip Not Found] or cantrip, she can make one weapon attack as a bonus action.

Spells: misty step 

spells: shield