Tidespout Tyrant

Flying Whenever you play a spell, return target permanent to its owner's hand.

Sire of Insanity

At the beginning of each end step, each player discards his or her hand.

Pyroblast

Counter target spell if it is blue or destroy target permanent if it is blue.

Chancellor of the Annex

You may reveal this card from your opening hand. If you do, when each opponent casts his or her first spell of the game, counter that spell unless that player pays {1}. Flying Whenever an opponent casts a spell, counter it unless that player pays {1}.

Elesh Norn, Grand Cenobite

Vigilance Other creatures you control get +2/+2. Creatures your opponents control get -2/-2.

Simian Spirit Guide

Remove Simian Spirit Guide in your hand from the game: Add {R} to your mana pool.

Entomb

Search your library for a card and put that card into your graveyard. Then shuffle your library.

Griselbrand

Flying, lifelink Pay 7 life: Draw seven cards.

Blazing Archon

Flying Creatures can't attack you.

Lotus Petal

Sacrifice Lotus Petal: Add one mana of any color to your mana pool. Play this ability as a mana source.

Reanimate

Put target creature card from any graveyard into play under your control. Lose life equal to that creature's total casting cost.

Pithing Needle

As Pithing Needle comes into play, name a card. Activated abilities of sources with the chosen name can't be played unless they're mana abilities.

Blood Moon

All non-basic lands are now basic mountains.

Thoughtseize

Target player reveals his or her hand. You choose a nonland card from it. That player discards that card. You lose 2 life.

Badlands

Counts as both mountains and swamp and is affected by spells that affect either. Tap to add either {R} or {B} to your mana pool.

Red Elemental Blast

Counters a blue spell being cast or destroys a blue card in play.

Animate Dead

Any creature in either player's graveyard comes into play on your side with -1 to its original power. If this enchantment is removed, or at end of game, target creature is returned to its owner's graveyard. Target creature may be killed as normal.

Exhume

Each player chooses a creature card in his or her graveyard and puts that creature into play.

Dark Ritual

Add {B}{B}{B} to your mana pool.

Sneak Attack

{R}: Choose a creature card from your hand and put that creature into play. The creature is unaffected by summoning sickness. At end of turn, sacrifice the creature.

Iona, Shield of Emeria

Flying As Iona, Shield of Emeria enters the battlefield, choose a color. Your opponents can't cast spells of the chosen color.

Bloodstained Mire

Polluted Delta

Verdant Catacombs

Faithless Looting

Ancient Tomb

Collective Brutality

Swamp

({T}: Add {B}.)

Mountain

({T}: Add {R}.)