Celebrimbor

Bestow {2}{u} (If you cast this card for its bestow cost,
it's an Aura spell with enchant creature. It becomes a creature again if it's not attached to a creature.)
Enchanted Creature gains: "Whenever this
creature dies, Exile it and Celebrimbor and
return both to the battlefield with Celebrimbor attached to this creature."
Celebrimbor can't block and can't be blocked.
Whenever Celebrimbor deals combat damage to
a player, draw a card.
{u}: Return Celebrimbor to your hand.