Colossal Rattlewurm has flash as long as you control a Desert. Trample {1}{G}, Exile this card from your graveyard: Search your library for a Desert card, put it onto the battlefield tapped, then shuffle.

Reach Lands you control and land cards you own that aren't on the battlefield are Deserts in addition to their other types. Lands you control have "{T}: Add one mana of any color." {T}: Mill two cards. You gain 1 life for each land card milled this way.

When this creature enters, search your library for a basic land card or a Desert card, reveal it, put it into your hand, then shuffle. This creature gets +1/+1 for each Desert you control.

When this creature enters, if an opponent controls more lands than you, search your library for a Desert card, put it onto the battlefield tapped, then shuffle. Whenever one or more land cards are put into your graveyard from anywhere, create a 1/1 red, green, and white Sand Warrior creature token. This ability triggers only once each turn.

This land enters tapped. When this land enters, it deals 1 damage to target opponent. {T}: Add {R} or {W}.

This land enters tapped. When this land enters, return a land you control to its owner's hand. If another Desert was returned this way, surveil 1. (Look at the top card of your library. You may put it into your graveyard.) {T}: Add {C}{C}.

This land enters tapped. When this land enters, it deals 1 damage to target opponent. {T}: Add {R} or {G}.

This land enters tapped. {T}: Add one mana of any type that a land you control could produce. {3}: Until end of turn, this land becomes an X/X green Plant creature with reach, where X is the greatest mana value among your commanders. It's still a land.

When this land enters, surveil 1. (Look at the top card of your library. You may put it into your graveyard.) {T}: Add {C}. {1}, {T}: Add one mana of any color.

{T}: Add {C}. {3}, {T}, Sacrifice this land: Create a 2/2 black Zombie creature token. Activate only as a sorcery.

This land enters tapped. When this land enters, it deals 1 damage to target opponent. {T}: Add {G} or {W}.

{T}: Add {C}. {T}: This land deals 1 damage to target attacking creature. Activate only during the end of combat step.

This land enters tapped. {T}: Add {R}. Cycling {1}{R} ({1}{R}, Discard this card: Draw a card.)

This land enters tapped. {T}: Add {G}. Cycling {1}{G} ({1}{G}, Discard this card: Draw a card.)

This land enters tapped. {T}: Add {W}. Cycling {1}{W} ({1}{W}, Discard this card: Draw a card.)

{T}: Add {C}. When this land is put into a graveyard from the battlefield, create a 2/2 black Zombie creature token.

{T}: Add {C}. {2}, {T}: Exile target creature you control. {4}, {T}, Sacrifice this land: Return each creature card exiled with this land to the battlefield under its owner's control.

({T}: Add {G}.)

{T}: Add {C}. {1}, {T}, Sacrifice this land: Put a -1/-1 counter on target creature. Activate only as a sorcery.

{T}: Add {C}. {T}, Pay 1 life: Add {G}. {1}{G}{G}, {T}, Sacrifice a Desert: Target creature gets +3/+3 until end of turn. Activate only as a sorcery.

{T}: Add {C}. {2}, Exile a land card from your graveyard: This land becomes a 3/4 Elemental creature until end of turn. It's still a land.

This land enters tapped. As it enters, choose a color. {T}: Add one mana of the chosen color.

({T}: Add {R}.)

{T}: Add {C}. {1}, {T}: Add one mana of any color.

({T}: Add {W}.)

{T}: Add {C}. {T}, Pay 1 life: Add {R}. {2}{R}{R}, {T}, Sacrifice a Desert: This land deals 2 damage to each opponent.

{T}: Add {C}. {2}, {T}, Sacrifice a Desert: Exile all graveyards.

{T}: Add {C}. {T}, Pay 1 life: Add {W}. {2}{W}{W}, {T}, Sacrifice a Desert: Creatures you control get +1/+1 until end of turn. Activate only as a sorcery.

Cataclysmic Prospecting deals X damage to each creature. For each mana from a Desert spent to cast this spell, create a tapped Treasure token.

Spree (Choose one or more additional costs.) + {1} — Search your library for a basic land card or a Desert card, put it onto the battlefield, then shuffle. + {3} — Create an X/X green Elemental creature token, where X is the number of lands you control.

Search your library for up to two land cards, put them onto the battlefield tapped, then shuffle. Then if you control three or more Deserts, create two 2/2 black Zombie creature tokens.