Cultivate

Search your library for up to two basic land cards, reveal those cards, put one onto the battlefield tapped and the other into your hand, then shuffle.

Swamp

Island

Into the North

Search your library for a snow land card, put it onto the battlefield tapped, then shuffle.

Forest

Arcane Signet

{T}: Add one mana of any color in your commander's color identity.

Plains

Harrow

As an additional cost to cast this spell, sacrifice a land.
Search your library for up to two basic land cards, put them onto the battlefield, then shuffle.