Nolofroh's Cliffside Shores

Nolofroh's Cliffside Shores provides {u}, {b}, or {g}.
Whenever a {u}, {b}, or {g} creature card enters
the battlefield, you gain life equal to half that
creature's power. If it's an uneven number,
round down.
Other {u}, {b}, and {g} land you control has
"{t}: Target creature gains vigilance until end of
turn. Draw a card."