Prevent all damage one or two target creatures would deal this turn.

Shadow (This creature can block or be blocked by only creatures with shadow.)
This creature can't be blocked by white creatures.

When this creature enters, you gain 4 life.

Defender
: This creature deals 1 damage to each opponent.
Whenever you cast an instant or sorcery spell, untap this creature.

, Exile two creature cards from a single graveyard: Create a 1/1 green Saproling creature token.

This creature can't attack or block alone.

Echo (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.)
When this creature enters, return target creature an opponent controls to its owner's hand.

Flash (You may cast this spell any time you could cast an instant.)
When this enchantment enters, scry 2, then draw a card.
, Sacrifice this enchantment: Scry 2. (Look at the top two cards of your library, then put any number of them on the bottom and the rest on top in any order.)

, Sacrifice a creature: Each opponent loses 1 life and you gain 1 life.

Destroy target creature with power 2 or less.

Target creature gets +2/+2 and gains trample until end of turn.
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.)

Flash
Enchant creature
When this Aura enters, each player mills two cards.
Enchanted creature gets -X/-0, where X is the number of cards in its controller's graveyard.

Level up (: Put a level counter on this. Level up only as a sorcery.)
LEVEL 1-3
2/3
Flying
LEVEL 4+
4/4
Flying, vigilance

Enchant player
Whenever a creature enchanted player controls enters, that player loses 1 life and you gain 1 life.

You draw two cards and lose 2 life.

Sacrifice this creature: Search your library for a basic land card, put that card onto the battlefield tapped, then shuffle.

Tap up to two target creatures.
Spell mastery — If there are two or more instant and/or sorcery cards in your graveyard, those creatures don't untap during their controllers' next untap steps.

When this artifact enters, you draw a card and you lose 1 life.
, Sacrifice this artifact: You draw a card and you lose 1 life.

Choose one —
• Destroy target creature with toughness 4 or greater.
• Destroy target enchantment.

Morph (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its morph cost.)
When this creature is turned face up, destroy target nonblack creature. It can't be regenerated.

Flying
When this creature enters, draw a card, then discard a card.

Choose two target creatures controlled by different players. Return those creatures to their owners' hands.

This creature can't be blocked.
Transmute (, Discard this card: Search your library for a card with the same mana value as this card, reveal it, put it into your hand, then shuffle. Transmute only as a sorcery.)

Enchant creature
Enchanted creature has infect. (It deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.)

When this creature enters, each player discards a card.

: Target creature can't be blocked this turn.

Return target permanent to its owner's hand.

Kicker (You may pay an additional as you cast this spell.)
Return target nonland permanent to its owner's hand. If this spell was kicked, draw a card.

When this creature enters, if was spent to cast it, destroy target artifact.

First strike
Cohort — , Tap an untapped Ally you control: This creature deals 1 damage to target opponent or planeswalker.

When this creature enters, it connives. (Draw a card, then discard a card. If you discarded a nonland card, put a +1/+1 counter on this creature.)

Target creature you control fights target creature you don't control. (Each deals damage equal to its power to the other.)
Cycling (, Discard this card: Draw a card.)

Put a +1/+1 counter and a lifelink counter on target creature.

Target creature gains deathtouch and indestructible until end of turn. (Damage and effects that say "destroy" don't destroy it.)