Whenever a creature attacks you, it gets -1/-0 until end of turn.

Whenever this creature becomes blocked by a creature, put a -1/-1 counter on that creature.

Flying
When another creature enters, return this creature to its owner's hand.

Nonwhite creatures with power 3 or greater don't untap during their controllers' untap steps.

When this creature attacks or blocks, destroy it at end of combat.

All artifacts have "At the beginning of your upkeep, sacrifice this artifact unless you pay ."

Flying
This creature can block only creatures with flying.

: Prevent the next 1 damage that would be dealt to this creature this turn.

Whenever this creature becomes blocked, prevent all combat damage that would be dealt by it this turn.

At the beginning of each player's upkeep, this artifact deals 1 damage to that player.
: Prevent the next 1 damage that would be dealt by this artifact this turn.

Whenever this creature becomes blocked, defending player discards a card.

Each player reveals the top five cards of their library, puts all land cards revealed this way onto the battlefield tapped, and exiles the rest.

At the beginning of your upkeep, you may have this creature deal 1 damage to target player or planeswalker.

Whenever you cast a creature spell, this enchantment deals 1 damage to target player or planeswalker.

: Add .
Sacrifice this artifact: Add .

Destroy target land.

You may sacrifice a Mountain rather than pay this spell's mana cost.
Thunderclap deals 3 damage to target creature.

Sizzle deals 3 damage to each opponent.

Destroy all creatures with mana value X or less.

Enchant creature
Pay 2 life: Regenerate enchanted creature.

: Regenerate this creature.

When this creature enters, you may return target Mercenary card from your graveyard to your hand.

If you control a Forest, rather than pay this spell's mana cost, you may have an opponent gain 3 life.
Target creature gets +4/+4 until end of turn.

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

If an opponent controls a Swamp and you control a Plains, you may cast this spell without paying its mana cost.
Protection from black

Red creature spells and green creature spells cost more to cast.

Flying
: This creature gets +1/+0 until end of turn. Activate only once each turn.

, , Discard a card: Destroy target Wall.

Players can't cast spells with the same name as a nontoken permanent.
Players can't play nonbasic lands with the same name as a nontoken permanent.

, : Put a charge counter on this artifact.
, Remove three charge counters from this artifact: Take an extra turn after this one.

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

Enchant creature
All creatures able to block enchanted creature do so.

Flying
When this creature enters, each other player may draw up to three cards.

Creatures played by your opponents enter tapped.

Whenever a creature blocks a black or red creature, the blocking creature gets +1/+1 until end of turn.

: Put target creature card from your graveyard on top of your library.