Grimsplint, the Lotus Seeker

When Grimsplint, the Lotus Seeker enters the battlefield, create a tapped legendary colorless artifact token named Fabled Black Lotus with
"{t}, Sacrifice Fabled Black Lotus: Add three
mana in any combination of colors." This ability triggers only once each turn.
Whenever you sacrifice one or more artifacts for
mana, untap Grimsplint, the Lotus Seeker and it
gains deathtouch and lifelink. (This effect lasts indefinitely.)