White creatures and blue creatures can't block.

Enchant creature
Enchanted creature can't attack or block, and its activated abilities can't be activated.

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

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

Flying
Whenever this creature becomes blocked, defending player discards all the cards in their hand, then draws that many cards.

If an opponent controls an Island and you control a Forest, you may cast this spell without paying its mana cost.

Destroy target land.

Whenever this creature becomes blocked, you may draw a card.

Destroy target creature. It can't be regenerated. Its controller creates a 1/1 white Spirit creature token with flying.

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

As this enchantment enters, choose a color.
: The next time a source of your choice of the chosen color would deal damage to you this turn, prevent that damage.

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

Creatures played by your opponents enter tapped.

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

: This turn, creatures can't block unless their controller pays for each blocking creature they control.

: This creature gets +1/+1 until end of turn. Any player may activate this ability.
: This creature gets -1/-1 until end of turn. Any player may activate this ability.

: This turn, creatures can't attack unless their controller pays for each attacking creature they control.

Enchant creature
Enchanted creature has vigilance.
Sacrifice this Aura: Regenerate enchanted creature.

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

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

, Sacrifice a Goblin: This creature deals 4 damage to target creature.

Whenever a creature attacks you, it gets -1/-0 until end of 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 a creature blocks a black or red creature, the blocking creature gets +1/+1 until end of turn.

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

Until end of turn, all creatures gain ": Tap target creature."

As this creature enters, choose a color.
Chameleon Spirit's power and toughness are each equal to the number of permanents of the chosen color your opponents control.

Whenever an opponent casts a blue or black spell, you may create a 1/1 green Snake creature token.

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

: Target player discards a card. Any player may activate this ability but only as a sorcery.

: Target creature gains flying until end of turn. Any player may activate this ability.

Whenever a creature you control deals combat damage to an opponent, you may draw a card.

This creature can't block.

Whenever a creature you control becomes blocked, this enchantment deals 1 damage to any target.

Choose target creature. At this turn's next end of combat, destroy all creatures that blocked or were blocked by it this turn.

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