Flying (This creature can't be blocked except by creatures with flying or reach.)
Hellbent — Necromancer's Familiar has
lifelink (Damage dealt by the creature also causes its controller to gain that much life.) as long as you have no cards in hand.
, Discard a card: Necromancer's Familiar gains
indestructible (Effects that say "destroy" don't destroy that permanent. An indestructible creature can't be destroyed by damage.) until end of turn. Tap it.