Combat Yielding Repair Automaton (C.Y.R.A.)

Magic Resistance: C.Y.R.A. has advantage on saving throws against spells and other magical effects.

Universal Translator: C.Y.R.A. knows Common, Giant, Primordial, Celestial, Infernal, and Sylvan. It can learn a new language after hearing or reading it through its senses. C.Y.R.A. serves as a translator and assistant to its creator.

Life Support System: When an ally within 5 feet drops to 0 hit points, C.Y.R.A. uses its life support system to attempt to stabilize them. C.Y.R.A. has advantage on Medicine checks for constructs.

Integrated Toolset: C.Y.R.A. has proficiency and expertise in Tinker’s tools, Smith’s tools, Navigator’s tools, Cooking utensils, and Thieves' tools. C.Y.R.A. can change its integrated tool to any of these as needed.

Built for Success: C.Y.R.A. can add a d4 to one attack roll, ability check, or saving throw it makes, and it can do so after seeing the d20 roll but before the effects of the roll are resolved. C.Y.R.A. can use this trait a number of times equal to its proficiency bonus, and it regains all expended uses when it finishes a long rest.

Healing Machine: If the Mending spell is cast on C.Y.R.A., it can spend a Hit Die, roll it, and regain a number of hit points equal to the roll plus its Constitution modifier (minimum of 1 hit point). In addition, C.Y.R.A.'s creator designed it to benefit from several spells that preserve life but that normally don't affect Constructs: Cure Wounds, Healing Word, Mass Cure Wounds, Mass Healing Word, and Spare the Dying.

Mechanical Nature: C.Y.R.A. has resistance to poison damage and immunity to disease, and it has advantage on saving throws against being paralyzed or poisoned. C.Y.R.A. doesn't need to eat, drink, or breathe.

Sentry's Rest: When C.Y.R.A. takes a long rest, it spends at least 6 hours in an inactive, motionless state, instead of sleeping. In this state, it appears inert, but it remains conscious.

Proficiency in Piano: C.Y.R.A. is proficient and possesses expertise in playing the piano.

C.Y.R.A. can make two Mantis Blade attacks as an action.

Mantis Blades: Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 7 (1d8 + 3) [slashing]

C.Y.R.A. can make one attack with the Lightning Launcher as part of its Attack action.
Lightning Launcher: Ranged Weapon Attack: +6 to hit, range 90/300 ft., one target. Hit: 7 (1d6+4) [lightning].

C.Y.R.A. is a 5th-level spellcaster. Its spellcasting ability is intelligence (spell save DC 15, +7 to hit with spell attacks). C.Y.R.A. has the following spells prepared:

At Will: Mending, Guidance, Detect Magic,  Identify

3/day each: Witch bolt, See Invisibility, Pulse Wave

Force Blast: Ranged Spell Attack: +7 to hit, range 180 ft., one target. Hit: 9 (2d8) [force]

Pulse Wave: 30-foot cone. Each creature in the cone must make a DC 15 Constitution saving throw. On a failed save, a creature takes 6d6 force damage and is either pulled 15 feet toward you or pushed 15 feet away from you (your choice). On a successful save, a creature takes half as much damage and isn't pulled or pushed. Unsecured objects that are completely within the cone are also pulled or pushed 15 feet in the chosen direction.

Witch Bolt: Ranged Spell Attack: +7 to hit, range 30 ft., one target. Hit: 1d12 lightning damage, and on each of your turns for the duration, you can use your action to deal 1d12 lightning damage to the target automatically. The spell ends if you use your action to do anything else. The spell also ends if the target is ever outside the spell’s range or if it has total cover from you.

 Lightning Launcher (Bonus Action): Ranged Weapon Attack: +6 to hit, range 90/300 ft., one target. Hit: 7 (1d6+4) [lightning]
Lightning Shot (Bonus Action): C.Y.R.A. can fire the Lightning Launcher once as a bonus action, but only if it hasn't already fired it as part of its Attack action

Mantis Blade (Bonus Action): Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 7 (1d8 + 3) [slashing]
C.Y.R.A. can make an additional Mantis Blade attack with its second arm as a bonus action.

Opportunity attack

Grand Piano Performance: C.Y.R.A. can play a grand performance on the piano for 24 hours straight without needing its Sentry's Rest of 6 hours. This action cannot be taken until the next dawn, after the performance is completed or halted willingly.

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