Druid of Peace

{t} : Add {g} or {u} to your mana pool.
Landfall — Whenever a land enters the
battlefield under your control, you gain 1 life.
At the beginning of your upkeep, if you control
four or more lands, you may shuffle Druid of
Peace into your library. If you do, search your
library or graveyard for a card named Tabirasi's Blessing, reveal it, and put it into your hand.
Then shuffle your library.