First Son of the Sea Jinbei

Haste
Whenever First Son of the Sea Jinbei attacks,
create a colorless Treasure artifact token with
"{t}, Sacrifice this artifact: Add one mana of any
color to your mana pool."
Whenever you sacrifice a Treasure, First Son
of the Sea Jinbei gets +1/+0 until end of turn.
Ningen to ryoshi no tatakai o owara setai.