text: For your life total to become the number of charge counters on Eternity Vessel, you actually gain or lose the necessary amount of life. For example, if your life total is 4 when Eternity Vessel's landfall ability resolves and Eternity Vessel has 12 charge counters on it, the ability will cause you to gain 8 life. Other cards that interact with life gain or life loss will interact with this effect accordingly.