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All Sliver creatures have flanking. (Whenever a creature without flanking blocks a Sliver, the blocking creature gets -1/-1 until end of turn.)

{G}, {T}, Discard a card: Search your library for a basic land card, reveal it, and put it into your hand. Then shuffle your library.

All Sliver creatures have poisonous 1. (Whenever a Sliver deals combat damage to a player, that player gets a poison counter. A player with ten or ...

({T}: Add {U}.) Mystic Sanctuary enters the battlefield tapped unless you control three or more other Islands. When Mystic Sanctuary enters the bat...

{G}, {T}, Discard a card: Create a 1/1 green Elf Druid creature token named Llanowar Elves. It has "{T}: Add {G}."

All Sliver creatures get +0/+2.

Split second (As long as this spell is on the stack, players can't cast spells or activate abilities that aren't mana abilities.) You can't lose th...

Flash Flying If an opponent would search a library, that player searches the top four cards of that library instead.

Each Sliver card in each player's hand has slivercycling {3}. Slivercycling {3} ({3}, Discard this card: Search your library for a Sliver card, rev...

When Leveler enters the battlefield, exile all cards from your library.

Relentless Rats gets +1/+1 for each other creature on the battlefield named Relentless Rats. A deck can have any number of cards named Relentless R...

Scry 2, then draw two cards. You lose 2 life.

{2}: Sarcomite Myr gains flying until end of turn. {2}, Sacrifice Sarcomite Myr: Draw a card.

Counter target spell that targets a permanent you control.

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

At the beginning of your upkeep, put a spore counter on Sporoloth Ancient. Creatures you control have "Remove two spore counters from this creature...

Exile Simian Spirit Guide from your hand: Add {R}.

Target creature gets +3/+3 until end of turn.

Destroy target nonblack creature. At the beginning of your next upkeep, pay {2}{B}. If you don't, you lose the game.

Destroy target creature. Its controller loses life equal to its power plus its toughness. Suspend 5—{1}{B} (Rather than cast this card from your ha...

Haste Shadow (This creature can block or be blocked by only creatures with shadow.) Whenever another creature is put into your graveyard from the b...

{1}{R}, Remove a time counter from a permanent you control or suspended card you own: Rift Elemental gets +2/+0 until end of turn.

Echo {1}{R} (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay ...

First strike Whenever Alesha, Who Smiles at Death attacks, you may pay {W/B}{W/B}. If you do, return target creature card with power 2 or less from...