Commander creatures you own have "When this creature enters or leaves the battlefield, draw a card."

This artifact enters tapped. Creatures enter tapped. {2}, {T}, Exile this artifact: Exile all untapped creatures. Activate only as a sorcery.

When this artifact enters, put a rope counter on target creature you control. At the beginning of each player's upkeep, that player may pay {2}. If they do, they put a rope counter on a creature they control. Otherwise, exile this artifact and each creature without a rope counter on it, then remove all rope counters from all creatures.

You may cast this card from exile. When this creature becomes the target of a spell or ability an opponent controls, exile this creature.

Whenever you cast a creature spell, you may pay {1}. If you do, draw a card, then discard a card.

Whenever you cast a spell with mana value 4 or greater, create a 1/1 colorless Thopter artifact creature token with flying.

When this enchantment enters, exile up to X target creatures. For each of those cards, its owner may play it for as long as it remains exiled. Whenever one or more nontoken creatures enter, if one or more of them entered from exile or was cast from exile, you draw a card. This ability triggers only once each turn.

Blue creature spells you cast cost {1} less to cast. Whenever you cast a creature spell, target creature an opponent controls doesn't untap during its controller's next untap step.

Whenever a creature enters, if it was cast, exile it, then return all other permanent cards exiled with this artifact to the battlefield under their owners' control.

({U/P} can be paid with either {U} or 2 life.) {1}{U/P}, {T}, Exile a spell you control: Target opponent reveals cards from the top of their library until they reveal a card with mana value equal to 1 plus the exiled spell's mana value. Exile that card, then that player shuffles. You may cast that exiled card without paying its mana cost.

Whenever you cast a spell, creatures you control can't be the targets of spells or abilities your opponents control this turn.

Strive — This spell costs {1}{U} more to cast for each target beyond the first. Exile any number of target creatures. For each creature exiled this way, its controller creates a 4/4 blue Sphinx creature token with flying.

Exile target artifact or creature. Its controller creates a 1/1 blue Bird creature token with flying. Foretell {U} (During your turn, you may pay {2} and exile this card from your hand face down. Cast it on a later turn for its foretell cost.)

Exile target creature. Its controller manifests the top card of their library. (That player puts the top card of their library onto the battlefield face down as a 2/2 creature. If it's a creature card, it can be turned face up any time for its mana cost.)

Exile target nonland permanent. For as long as that card remains exiled, its owner may cast it without paying its mana cost.

Exile target artifact or creature. Its controller creates a 4/4 blue and red Elemental creature token.

{2}{U}{U}: Look at the top five cards of your library, put one of them into your hand, and exile the rest.

Each player shuffles their hand and graveyard into their library. You exile the top ten cards of your library. Then each player draws up to seven cards.

Search your library for a card, exile it, then shuffle. Any opponent may have you put that card into your hand. If no player does, you draw three cards.

Search your library for three cards, exile them, then shuffle. Draw a card at the beginning of the next turn's upkeep.

Search your library for three cards, exile them, then shuffle. Draw a card.