Amphibious (Water Only). The familiar can breathe air and water. Extradimensional Escape (Recharges after a Long Rest). When the familiar would drop to 0 Hit Points, it instead drops to 1 Hit Point and vanishes into an extradimensional space, leaving behind anything it was wearing or carrying. It remains there for 1 hour or until you summon it as a Magic action, and then it reappearsin your space.
Otherworldly Scratch. Melee Spell Attack: your Spell Attack Modifier to hit, reach 5 ft., one target. Hit: 1 + the spell’s level of Radiant damage (Celestial), Psychicdamage (Fey), or Necrotic damage (Fiend).
Deliver Spell. When you cast a spell with a range of touch, the familiar can deliver the spell with its touch.To do so, the familiar must be within 120 feet of you.