Breeding Nyphtomat

Undying
{t}: Put a 0/1 blue-green Nyphtomat token
creature with "When this creature leaves the
Battlefield, you may pay {1}: Gain one mana of any
colour" into the battlefield.

When Breeding Nyphtomat is targeted, return
it to your hand.

"I keep hearing my name,
but then there's nobody there.