Search another target player's library for a card and put that card into your hand. Then shuffle that player's library.

Fruitcake Elemental is indestructible.
At the end of your turn, Fruitcake Elemental deals 7 damage to you.
: Target player gains control of Fruitcake Elemental.

At the beginning of your upkeep, destroy another nonland permanent chosen at random, then put a number of +1/+1 counters on Yule Ooze equal to that permanent's converted mana cost.
, Eat some food: Regenerate Yule Ooze.

Put a creature card from your hand into play under target opponent's control. That creature attacks each turn if able . . . and always attacks its controller.

Search target opponent's library for four cards with different names and reveal them. That player chooses two of those cards. Put the chosen cards into the player's graveyard and the rest into your hand. Then that player shuffles their library.

Whenever a creature deals damage to you, put a globe counter on it.
, , , , : Tap all creatures with globe counters on them.

Family gathering — Each creature target player controls deals damage equal to its power to another random creature that player controls.

Stocking Tiger enters with a sealed Magic booster pack under it.
When Stocking Tiger deals combat damage to a player, unwrap the booster pack and put it into your hand.

Lifelink, haste
When this creature enters, create two tokens that are copies of target token.
Evoke—Celebrate an opponent. (To celebrate an opponent, give them a gift, toast to them, or even just tell them you're grateful to be playing Magic together.)