Whenever one or more creatures attack you, if this creature is untapped, you may untap all creatures you control.

Each player sacrifices two creatures of their choice.

When this enchantment enters, you become the monarch.
Whenever a creature attacks you or a planeswalker you control, that creature's controller loses 1 life.

: Draw a card.

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

When this creature enters, destroy target creature an opponent controls.

Destroy target land. Creatures without flying can't block this turn.

Flying, trample

Smiting Helix deals 3 damage to any target and you gain 3 life.
Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)

When this creature enters, tap all creatures target opponent controls.

Whenever this creature attacks, you may change the base power and toughness of target Human you control to this creature's power and toughness until end of turn.

, , Sacrifice this creature: It deals damage equal to its power to target creature.

Defender (This creature can't attack.)
Flying

, , Sacrifice another creature: Reveal cards from the top of your library until you reveal a nonlegendary creature card. Put that card onto the battlefield and the rest on the bottom of your library in a random order.

If an opponent controls a Plains and you control a Swamp, you may cast this spell without paying its mana cost.
All creatures get -2/-2 until end of turn.

Changeling (This card is every creature type.)
When this creature enters, you may return target creature card from your graveyard to your hand.

When this creature enters, put a -1/-1 counter on each creature.

Flash
When this creature enters, target creature gets +3/+3 until end of turn.
Evoke (You may cast this spell for its evoke cost. If you do, it's sacrificed when it enters.)

Flying
When this creature becomes the target of a spell or ability, sacrifice it.

When this creature enters, create two 1/1 colorless Thopter artifact creature tokens with flying.
Tap two untapped artifacts you control: Target creature can't be blocked this turn.

: This creature deals 1 damage to target creature that was dealt damage this turn. When that creature dies this turn, flip this creature.

As long as you control a Yanling planeswalker, this creature has flying. (It can't be blocked except by creatures with flying or reach.)

When this creature enters, create two 1/1 red Goblin creature tokens.

: This creature deals 2 damage to target creature with flying and that creature loses flying until end of turn.

Whenever an opponent discards a card, you may draw a card.

Swampwalk (This creature can't be blocked as long as defending player controls a Swamp.)
As long as this card is in your graveyard and you control a Swamp, creatures you control have swampwalk.

Flying
Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.)
Sacrifice a creature: This creature gets +1/+1 until end of turn.

Draw three cards.

Create two 1/1 white Bird creature tokens with flying.
Flashback—Tap three untapped white creatures you control. (You may cast this card from your graveyard for its flashback cost. Then exile it.)

When this creature dies, you may exile it. If you do, reveal cards from the top of your library until you reveal a creature card. Put that card onto the battlefield and put all other cards revealed this way into your graveyard.

Flying
Whenever this creature becomes the target of a spell or ability, this creature gets +0/+3 until end of turn.

Whenever another creature you control enters, target creature an opponent controls gets -1/-1 until end of turn.

Flying
: Scry 1, then reveal the top card of your library. This creature gets +X/+0 until end of turn, where X is that card's mana value. (To scry 1, look at the top card of your library, then you may put that card on the bottom.)

Flash
When this enchantment enters, exile target nonland permanent an opponent controls until this enchantment leaves the battlefield.
Cycling (, Discard this card: Draw a card.)

If an opponent had three or more cards put into their graveyard from anywhere this turn, you may pay rather than pay this spell's mana cost.
Exile target player's graveyard.

Vigilance
Creatures can't attack you or planeswalkers you control unless their controller pays for each of those creatures.