Awesome Cyber Monday

All Sliver creatures have first strike.

All creatures have "At the beginning of your upkeep, sacrifice this creature unless you pay {1}."

Roiling Horror's power and toughness are each equal to your life total minus the life total of an opponent with the most life. Suspend X—{X}{B}{B}...

{1}{B}, {T}, Discard a card: Target creature gets +1/+0 and gains first strike until end of turn.

Change the target of target spell with a single target. You lose life equal to that spell's mana value.

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

Enchant creature You control enchanted creature. At the beginning of your upkeep, enchanted creature deals 1 damage to its owner.

You gain 20 life. Suspend 10—{W} (Rather than cast this card from your hand, you may pay {W} and exile it with ten time counters on it. At the begi...

Vanishing 3 (This creature enters the battlefield with three time counters on it. At the beginning of your upkeep, remove a time counter from it. W...

When you cast this spell, any player may pay 5 life. If a player does, counter Dash Hopes. Counter target spell.

Destroy target nonblack creature that entered the battlefield this turn.

As Circle of Affliction enters the battlefield, choose a color. Whenever a source of the chosen color deals damage to you, you may pay {1}. If you ...

When you cast this spell, any player may sacrifice a creature. If a player does, counter Brain Gorgers. Madness {1}{B} (If you discard this card, d...

{T}: Target player loses 1 life. {4}, {T}: Search your library for a Rebel permanent card with mana value 3 or less, put it onto the battlefield, t...

When Big Game Hunter enters the battlefield, destroy target creature with power 4 or greater. It can't be regenerated. Madness {B} (If you discard...

Flying, vigilance

{T}: Target creature other than Serendib Sorcerer has base power and toughness 0/2 until end of turn.

Whenever Riptide Pilferer deals combat damage to a player, that player discards a card. Morph {U} (You may cast this card face down as a 2/2 creatu...

{W}, {T}, Discard a card: Creatures you control get +1/+0 until end of turn.

As Primal Plasma enters the battlefield, it becomes your choice of a 3/3 creature, a 2/2 creature with flying, or a 1/6 creature with defender.

Choose one — • Target creature gains islandwalk until end of turn. (It can't be blocked as long as defending player controls an Island.) • Target...

Until end of turn, target creature loses all abilities and has base power and toughness 0/1.

{T}: Switch target creature's power and toughness until end of turn.

Flying When Gossamer Phantasm becomes the target of a spell or ability, sacrifice it.