Crucible of Worlds

Strip Mine

{T}: Add {C}.
{T}, Sacrifice this land: Destroy target land.

Hazezon, Shaper of Sand

Desertwalk (This creature can't be blocked as long as defending player controls a Desert.)
You may play Desert lands from your graveyard.
Whenever a Desert you control enters, create two 1/1 red, green, and white Sand Warrior creature tokens.

Exploration

You may play an additional land on each of your turns.

Wasteland

{T}: Add {C}.
{T}, Sacrifice this land: Destroy target nonbasic land.