Boxing Day

Clockwork Hydra enters the battlefield with four +1/+1 counters on it. Whenever Clockwork Hydra attacks or blocks, remove a +1/+1 counter from it. ...

Creatures you control are Slivers in addition to their other creature types.

{T}: Add {U}. {1}{U}: Chronatog Totem becomes a 1/2 blue Atog artifact creature until end of turn. {0}: Chronatog Totem gets +3/+3 until end of tur...

{1}, {T}, Sacrifice Chromatic Star: Add one mana of any color. When Chromatic Star is put into a graveyard from the battlefield, draw a card.

{4}, {T}: Reveal the top card of your library. If it has the same name as a card in your graveyard, put it into your graveyard. Otherwise, draw a c...

Vigilance When Jedit's Dragoons enters the battlefield, you gain 4 life.

Flying Brass Gnat doesn't untap during your untap step. At the beginning of your upkeep, you may pay {1}. If you do, untap Brass Gnat.

{T}: Target Assembly-Worker creature gets +1/+1 until end of turn.

Trample Whenever a creature you control with trample attacks, it gets +2/+2 until end of turn.

Flying {2}: Search your library for a Dragon permanent card and put it into your graveyard. If you do, Scion of the Ur-Dragon becomes a copy of tha...

Sacrifice Saffi Eriksdotter: When target creature is put into your graveyard this turn, return that card to the battlefield.

All Slivers have "Whenever this permanent becomes the target of a spell an opponent controls, you may draw a card."

Whenever you cast an artifact spell, you may search your graveyard, hand, and/or library for a card with the same name as that spell and put it ont...

Whenever an opponent casts a spell, Kaervek the Merciless deals damage equal to that spell's mana value to any target.

Vigilance {T}: Untap target attacking creature. Prevent all combat damage that would be dealt to and dealt by that creature this turn. Suspend 4—{W...

When Ivory Giant enters the battlefield, tap all nonwhite creatures. Suspend 5—{W} (Rather than cast this card from your hand, you may pay {W} and ...

All Slivers are colorless.

All Sliver creatures have haste. All Slivers have "{1}, Sacrifice this permanent: Target Sliver creature gets +2/+2 until end of turn."

All Slivers have "When this permanent enters the battlefield, destroy target artifact or enchantment."

If damage would be dealt to Dralnu, Lich Lord, sacrifice that many permanents instead. {T}: Target instant or sorcery card in your graveyard gains ...

All Slivers have "{T}: Choose a card name. Target opponent reveals a card at random from their hand. If that card has the chosen name, that player ...

Forestwalk (This creature can't be blocked as long as defending player controls a Forest.) When Yavimaya Dryad enters the battlefield, you may sea...

Buyback {2}{G} (You may pay an additional {2}{G} as you cast this spell. If you do, put this card into your hand as it resolves.) Create an X/X gre...

{G}: Wormwood Dryad gains forestwalk until end of turn and deals 1 damage to you. (It can't be blocked as long as defending player controls a Fores...