Whenever a creature attacks you or a planeswalker you control, that creature's controller loses 1 life and you gain 1 life.

Whenever another creature you control enters, you gain 2 life.

Whenever you gain life, put a +1/+1 counter on this creature.
As long as you have 25 or more life, this creature has double strike. (It deals both first-strike and regular combat damage.)

When this creature enters, gain control of target creature an opponent controls with power 2 or less until end of turn. Untap that creature. It gains haste until end of turn. (It can attack and this turn.)

Prevent all noncombat damage that would be dealt to you and other permanents you control.
−2: Exile target creature with power 4 or greater.

Reach (This creature can block creatures with flying.)
Deathtouch (Any amount of damage this deals to a creature is enough to destroy it.)
Whenever another creature dies, each opponent loses 1 life.

Wild Magic Surge — Whenever this creature attacks, roll a d20.
1—9 | Exile the top card of your library. You may play it this turn.
10—19 | Exile the top two cards of your library. You may play them this turn.
20 | Exile the top three cards of your library. You may play them this turn.

Create a token that's a copy of target creature you control, except the token has flying and it isn't legendary.

Tap an untapped creature you control: This enchantment deals 1 damage to target player or planeswalker.

Flying
When this creature enters, shuffle the cards from your hand into your library, then draw that many cards.
When this creature dies, shuffle the cards from your hand into your library, then draw that many cards.

Changeling (This card is every creature type.)
Haste
Champion a creature (When this enters, sacrifice it unless you exile another creature you control. When this leaves the battlefield, that card returns to the battlefield.)

As long as you control a Mountain, this creature has menace. (It can't be blocked except by two or more creatures.)

Flying
Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.)
: Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

Flying
: Regenerate this creature.
Cascade (When you cast this spell, exile cards from the top of your library until you exile a nonland card that costs less. You may cast it without paying its mana cost. Put the exiled cards on the bottom in a random order.)

Slivers can't be blocked except by Slivers.

Return up to one target artifact card, up to one target enchantment card, up to one target instant card, up to one target sorcery card, and up to one target planeswalker card from your graveyard to your hand.
Exile Reconstruct History.

Kicker (You may pay an additional as you cast this spell.)
Search your library for up to two basic land cards, put them onto the battlefield tapped, then shuffle. If this spell was kicked, put two +1/+1 counters on each creature you control.

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

You draw three cards and you lose 3 life.

Violent Eruption deals 4 damage divided as you choose among any number of targets.
Madness (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)

Enchant permanent
When this Aura enters and at the beginning of your upkeep, gain control of enchanted permanent until end of turn. Untap that permanent. It gains haste until end of turn.

Whenever this creature is dealt damage, it deals that much damage to any target.

When this creature enters, it deals damage equal to its power to any target.
Persist (When this creature dies, if it had no -1/-1 counters on it, return it to the battlefield under its owner's control with a -1/-1 counter on it.)

Flying
: This creature deals 1 damage to any target.
Morph (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its morph cost.)

Whenever you activate an ability of an artifact or creature that isn't a mana ability, this creature gets +1/+1 until end of turn.

: Target creature you control with toughness less than this creature's power gains flying until end of turn. Destroy that creature at the beginning of the next end step.

Draw three cards.

Destroy all artifacts. They can't be regenerated.

Roll a d20.
1—9 | Thunderwave deals 3 damage to each creature.
10—19 | You may choose a creature. Thunderwave deals 3 damage to each creature not chosen this way.
20 | Thunderwave deals 6 damage to each creature your opponents control.

When this creature enters, it deals X damage to target creature or planeswalker, where X is the number of creatures in your party. (Your party consists of up to one each of Cleric, Rogue, Warrior, and Wizard.)

Sunburst (This creature enters with a +1/+1 counter on it for each color of mana spent to cast it.)
, Remove four +1/+1 counters from this creature: Target player draws three cards.

When this creature enters, creatures you control get +1/+1 and gain haste until end of turn.

Enchant creature
Enchanted creature gets +2/+2 and has flying.
: Enchanted creature gets +1/+0 until end of turn.

Defender, flying
: Creatures you control with defender can attack this turn as though they didn't have defender.

Flying
: Return this card from your graveyard to your hand.

When this creature enters, each opponent sacrifices a permanent of their choice unless they pay .