Boxing Day

Flying, haste {1}{R}: This creature gets +X/+0 until end of turn, where X is the number of artifacts you control.

{1}{W}: This creature gets +0/+3 until end of turn.

{1}, {T}: Add {R}{G}{W}.

{T}: Prevent the next 1 damage that would be dealt to any target this turn. {T}: Target creature can't be blocked this turn.

Whenever this creature attacks, each opponent loses 2 life.

Trample, haste At the beginning of the end step, sacrifice this creature. Unearth {1}{R} ({1}{R}: Return this card from your graveyard to the battl...

Devour 1 (As this creature enters, you may sacrifice any number of creatures. It enters with that many +1/+1 counters on it.) This creature has fly...

When this creature leaves the battlefield, create a 2/2 black Zombie creature token. Unearth {3}{B} ({3}{B}: Return this card from your graveyard t...

{T}: Target land you control becomes the basic land type of your choice until end of turn.

Protection from white

Flash Devour 1 (As this creature enters, you may sacrifice any number of creatures. It enters with that many +1/+1 counters on it.)

Exalted (Whenever a creature you control attacks alone, that creature gets +1/+1 until end of turn.) {U}, {T}: Draw a card, then discard a card.

Sacrifice this creature: Put a -1/-1 counter on target creature. Then if that creature's toughness is 1 or greater, regenerate it.

{W}{U}{B}{R}{G}: This creature gets +2/+2 and gains fear until end of turn. Target creature gets -2/-2 until end of turn. Activate only during your...

Flying When this creature enters, look at the top three cards of your library. You may reveal an artifact card from among them and put it into your...

Mountainwalk (This creature can't be blocked as long as defending player controls a Mountain.)

Flying At the beginning of your upkeep, return an artifact you control to its owner's hand.

Flying

Reach (This creature can block creatures with flying.) As long as you control a red permanent, this creature gets +1/+0 and has first strike.

First strike {W}{U}{B}{R}{G}: Until end of turn, this creature becomes a Dragon, gets +5/+3, and gains flying and trample.

Flying Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.) Sacrifice a cr...

Flying {B}: This creature gets +2/-1 until end of turn.

{R}{G}{W}: This creature and each other creature with the same name as it get +3/+3 until end of turn.