Irrigation Ditch

This land enters tapped.
{T}: Add {W}.
{T}, Sacrifice this land: Add {G}{U}.

Energy Tap

Tap target untapped creature you control. If you do, add an amount of {C} equal to that creature's mana value.

Gurmag Angler

Delve (Each card you exile from your graveyard while casting this spell pays for {1}.)

It of the Horrid Swarm

Emerge {6}{G} (You may cast this spell by sacrificing a creature and paying the emerge cost reduced by that creature's mana value.)
When you cast this spell, create two 1/1 green Insect creature tokens.

Rush of Knowledge

Draw cards equal to the highest mana value among permanents you control.

Sultai Scavenger

Delve (Each card you exile from your graveyard while casting this spell pays for {1}.)
Flying

Metamorphosis

As an additional cost to cast this spell, sacrifice a creature.
Add X mana of any one color, where X is 1 plus the sacrificed creature's mana value. Spend this mana only to cast creature spells.

Scornful Egotist

Morph {U} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.)

Sulfur Vent

This land enters tapped.
{T}: Add {B}.
{T}, Sacrifice this land: Add {U}{R}.

Ulamog's Crusher

Annihilator 2 (Whenever this creature attacks, defending player sacrifices two permanents of their choice.)
This creature attacks each combat if able.

Burnt Offering

As an additional cost to cast this spell, sacrifice a creature.
Add X mana in any combination of {B} and/or {R}, where X is the sacrificed creature's mana value.

Ancient Spring

This land enters tapped.
{T}: Add {U}.
{T}, Sacrifice this land: Add {W}{B}.

Peat Bog

This land enters tapped with two depletion counters on it.
{T}, Remove a depletion counter from this land: Add {B}{B}. If there are no depletion counters on this land, sacrifice it.

Wretched Gryff

Emerge {5}{U} (You may cast this spell by sacrificing a creature and paying the emerge cost reduced by that creature's mana value.)
When you cast this spell, draw a card.
Flying

Ponder

Look at the top three cards of your library, then put them back in any order. You may shuffle.
Draw a card.

Geothermal Crevice

This land enters tapped.
{T}: Add {R}.
{T}, Sacrifice this land: Add {B}{G}.

Saprazzan Skerry

This land enters tapped with two depletion counters on it.
{T}, Remove a depletion counter from this land: Add {U}{U}. If there are no depletion counters on this land, sacrifice it.