Landfall — Whenever a land you control enters, creatures you control get +1/+1 until end of turn.

This land enters tapped.
Cycling

Whenever this creature saddles a Mount or crews a Vehicle during your main phase, that Mount or Vehicle gains flying until end of turn.

: Target opponent discards two cards. Activate only during your turn, before attackers are declared.

Horsemanship
When Cao Ren enters, you lose 3 life.

Whenever Caparocti Sunborn attacks, you may tap two untapped artifacts and/or creatures you control. If you do, discover 3.

First strike
: This creature gets +1/+0 until end of turn.

Enchant creature
Enchanted creature gets +1/+1.
, Sacrifice this Aura: Draw a card.

: This creature gets +0/+1 until end of turn.

, , Sacrifice this creature: Destroy target artifact or enchantment.

Sacrifice a Treasure: This Vehicle becomes an artifact creature until end of turn.
Crew 3

: Add .
, : Add one mana of any color.
Cycling

target creature gets -x/-x until end of turn, where x is the number of times a capital letter appears in its rules text. (ignore reminder text and flavor text.)

Council's dilemma — Starting with you, each player votes for death or taxes. Each opponent sacrifices a creature of their choice for each death vote and discards a card for each taxes vote.

Flash
Vigilance
Devour artifact 1

At the beginning of your upkeep, choose target nonland permanent you control and up to two target nonland permanents you don't control. Destroy one of them at random.

This spell costs less to cast if you have nine or more cards in your graveyard.
Flying
When this creature enters, exile three cards at random from your graveyard. Choose a noncreature, nonland card from among them and copy it. You may cast the copy without paying its mana cost.

Sliver creatures you control have "Whenever this creature deals combat damage to a player, exile the top card of your library. You may play that card this turn."

: This creature deals 1 damage to any target. Activate only during your turn, before attackers are declared.

Buyback
Return target permanent to its owner's hand.

Return target creature to its owner's hand. (Then exile this card. You may cast the creature later from exile.)

Throw ... — , Unattach an Equipment from Captain America: He deals damage equal to that Equipment's mana value divided as you choose among one, two, or three targets.
... Catch — At the beginning of combat on your turn, attach up to one target Equipment you control to Captain America.

When Captain America enters, you may search your library for an Equipment card with mana value 3 or less, put it onto the battlefield, then shuffle.
Whenever Captain America attacks, for each Equipment attached to him, create a 1/1 white Soldier creature token.

Vigilance
Whenever a creature you control becomes tapped during your turn, if it's the first time that creature has become tapped this turn, untap it.