mtg threshold cards Fledgling Dragon | Judgment Cabal Ritual from Torment (2002).

For just three mana, he gives you a well-statted body, with two deliciously villainous effects attached

At the cost of his own life, Zack Fair can move his counters and Equipment to another creature for one mana, which can be exploited via certain Equipment like Mithril Coat

Im not sure, but the ominous artwork by Jesper Myrfors on Season of the Witch from The Dark seems to fit the holiday perfectly

Casting Hour of Revelation or even Armageddon when Avacyn is in play can win you the game pretty decisively

You can use those cards in place of physical copies

Her two abilities are Trance which lets you send the top two cards from your deck to the graveyard (called milling) and in return, Terra gains Flying, making her much more difficult to block