I’m Rubber, You’re Glue

When you speak in non-rhyming sentences, sacrifice I’m Rubber, You’re Glue.
Say “I’m rubber, you’re glue. Everything bounces off me and sticks to you”: Change the target of target spell or ability that targets only you.

Psychic Network

Each player plays with the top card of their library held against their forehead, revealed to each other player.

Free-for-All

When Free-for-All enters the battlefield, exile all creatures face down.
At the beginning of each player’s upkeep, that player chooses a card exiled with Free-for-All at random and puts it onto the battlefield.
When Free-for-All leaves the battlefield, put all cards exiled with it into their owners’ graveyards.

Double Take

Choose another player. You draw two cards. At the beginning of the first upkeep in your next game with that player, you draw two cards.

Double Play

Choose another player. Search your library for a basic land card, put it onto the battlefield, then shuffle your library. At the beginning of the first upkeep in your next game with that player, search your library for a basic land card, put it onto the battlefield, then shuffle your library.

Urza’s Science Fair Project

: Roll a six-sided die. Urza’s Science Fair Project gets the indicated result.
1 — It gets -2/-2 until end of turn.
2 — Prevent all combat damage it would deal this turn.
3 — It gains vigilance until end of turn.
4 — It gains first strike until end of turn.
5 — It gains flying until end of turn.
6 — It gets +2/+2 until end of turn.

Elvish Impersonators

As Elvish Impersonators enters the battlefield, roll a six-sided die twice. Its base power becomes the first result and its base toughness becomes the second result.

Jalum Grifter

, : Shuffle Jalum Grifter and two lands you control face down. Target opponent chooses one of those cards. Turn the cards face up. If they chose Jalum Grifter, sacrifice it. Otherwise, destroy target permanent.

Goblin Bookie

, : Reflip any coin or reroll any die. (Activate this ability only any time it makes sense.)