Gloomwidow

Reach
Gloomwidow can block only creatures with flying.

Isleback Spawn

Shroud (This creature can’t be the target of spells or abilities.)
Isleback Spawn gets +4/+8 as long as a library has twenty or fewer cards in it.

Tyrannize

Target player discards their hand unless they pay 7 life.

Primal Beyond

As Primal Beyond enters, you may reveal an Elemental card from your hand. If you don’t, Primal Beyond enters tapped.
: Add .
: Add one mana of any color. Spend this mana only to cast an Elemental spell or activate an ability of an Elemental.

Supreme Exemplar

Flying
Champion an Elemental (When this enters, sacrifice it unless you exile another Elemental you control. When this leaves the battlefield, that card returns to the battlefield.)

Ponder

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

Shelldock Isle

Hideaway 4 (When this land enters, look at the top four cards of your library, exile one face down, then put the rest on the bottom in a random order.)
Shelldock Isle enters tapped.
: Add .
, : You may play the exiled card without paying its mana cost if a library has twenty or fewer cards in it.

Tideshaper Mystic

: Target land becomes the basic land type of your choice until end of turn. Activate only during your turn.

Fertile Ground

Enchant land
Whenever enchanted land is tapped for mana, its controller adds an additional one mana of any color.

Serpent Generator

, : Create a 1/1 colorless Snake artifact creature token. It has “Whenever this creature deals damage to a player, that player gets a poison counter.” (A player with ten or more poison counters loses the game.)

Winter Orb

As long as Winter Orb is untapped, players can’t untap more than one land during their untap steps.

Brothers of Fire

: Brothers of Fire deals 1 damage to any target and 1 damage to you.

Phyrexian Boon

Enchant creature
Enchanted creature gets +2/+1 as long as it’s black. Otherwise, it gets -1/-2.

Ashnod’s Transmogrant

, Sacrifice Ashnod’s Transmogrant: Put a +1/+1 counter on target nonartifact creature. That creature becomes an artifact in addition to its other types.

Juzám Djinn

At the beginning of your upkeep, Juzám Djinn deals 1 damage to you.

Mindstab Thrull

Whenever Mindstab Thrull attacks and isn’t blocked, you may sacrifice it. If you do, defending player discards three cards.

Thorn Thallid

At the beginning of your upkeep, put a spore counter on Thorn Thallid.
Remove three spore counters from Thorn Thallid: It deals 1 damage to any target.

Polar Kraken

Trample
Polar Kraken enters tapped.
Cumulative upkeep—Sacrifice a land. (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)

Nevinyrral’s Disk

Nevinyrral’s Disk enters tapped.
, : Destroy all artifacts, creatures, and enchantments.

Doubling Cube

, : Double the amount of each type of unspent mana you have.

Skyshroud Ranger

: You may put a land card from your hand onto the battlefield. Activate only as a sorcery.

Rootwater Commando

Islandwalk (This creature can’t be blocked as long as defending player controls an Island.)