Steel Defender

Medium construct, Any alignment

Armor Class 15 (natural armor)

Hit Points 2 + your Intelligence modifier + five times your artificer level (the defender has a number of Hit Dice [d8s] equal to your artificer level)

Speed 40 ft.

STR 14 (+2)

DEX 12 (+1)

CON 14 (+2)

INT 4 (-3)

WIS 10 (+0)

CHA 6 (-2)

Saving Throws DEX +1 plus PB, CON +2 plus PB

Skills Athletics +2 plus PB, Perception +0 plus PB × 2

Damage Immunities poison

Condition Immunities charmed, exhaustion, poisoned

Senses darkvision 60 ft., passive Perception 10 + (PB × 2)

Languages understands the languages you speak

Challenge —

Vigilant. The defender can't be surprised.

Actions

Force-Empowered Rend. Melee Weapon Attack: to hit, reach 5 ft., one target you can see. Hit: 1d8 + PB force damage.

Repair (3/Day). The magical mechanisms inside the defender restore 2d8 + PB hit points to itself or to one construct or object within 5 feet of it.

Reactions

Deflect Attack. The defender imposes disadvantage on the attack roll of one creature it can see that is within 5 feet of it, provided the attack roll is against a creature other than the defender.

Source

Tasha's Cauldron of Everything, p. 19