Darkwood Shaman

{t}: Reveal the top card of your library. If it's a land card, add one mana of any color to your
mana pool.
{b/g}, {t}: Reveal the top card of your library. If it's land card, create a 1/1 green Elf creature token.
{b/g}{b/g}, {t}: Reveal the top card of your library. If
it's a land card, put a +1/+1 counter on up to one target creature and a -1/-1 counter on up to one target creature.