Osgar, Element's Conduit

You may play two additional lands on each of
your turns.
Landfall —Whenever a land enters the battlefield
under your control, draw a card for each land that
has entered the battlefield this turn. If it's the
fourth time this ability has resolved, Gain 10 life,
Scry 4, then Draw 3 cards.Deal 10 damage divided
as you choose among up to three permanents
and/or players.Search your library for up to four
land cards, reveal those cards and put them into
your hand. Shuffle your library