Secure the Wastes

Put X 1/1 white Warrior creature tokens onto the battlefield.

Snapcaster Mage

Flash When Snapcaster Mage enters the battlefield, target instant or sorcery card in your graveyard gains flashback until end of turn. The flashback cost is equal to its mana cost. (You may cast that card from your graveyard for its flashback cost. Then exile it.)

Timely Reinforcements

If you have less life than an opponent, you gain 6 life. If you control fewer creatures than an opponent, put three 1/1 white Soldier creature tokens onto the battlefield.

Logic Knot

Delve (You may exile any number of cards from your graveyard as you cast this spell. It costs {1} less to cast for each card exiled this way.) Counter target spell unless its controller pays {X}.

Spell Snare

Counter target spell with converted mana cost 2.

Serum Visions

Draw a card. Scry 2 (Look at the top two cards of your library. Put any number of them on the bottom of your library and the rest on top of it in any order.)

Cryptic Command

Remand

Counter target spell. If you do, return that spell card to its owner's hand. Draw a card.

Sphinx's Revelation

You gain X life and draw X cards.

Supreme Verdict

Supreme Verdict can't be countered. Destroy all creatures.

Esper Charm

Choose one — Destroy target enchantment; or draw two cards; or target player discards two cards.

Mana Leak

Counter target spell unless its caster pays an additional {3}.

Think Twice

Draw a card. Flashback {2}{U} (You may play this card from your graveyard for its flashback cost. Then remove it from the game.)

Path to Exile

Exile target creature. Its controller may search his or her library for a basic land card, put that card onto the battlefield tapped, then shuffle his or her library.

Celestial Colonnade

Celestial Colonnade enters the battlefield tapped. {T}: Add {W} or {U} to your mana pool. {3}{W}{U}: Until end of turn, Celestial Colonnade becomes a 4/4 white and blue Elemental creature with flying and vigilance. It's still a land.

Flooded Strand

Polluted Delta

Watery Grave

Ghost Quarter

Mystic Gate

Drowned Catacomb

Glacial Fortress

Hallowed Fountain

({T}: Add {W} or {U}.) As Hallowed Fountain enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.

Plains

({T}: Add {W}.)

Island

({T}: Add {U}.)

Swamp

({T}: Add {B}.)