Cloudstone Curio
Casting Cost:
Whenever a nonartifact permanent enters the battlefield under your control, you may return another permanent you control that shares a permanent type with it to its owner's hand.
$ 000
Cloud of Faeries
Flying
When Cloud of Faeries enters the battlefield, untap up to two lands.
Cycling (, Discard this card: Draw a card.)
Cloud Key
As Cloud Key enters the battlefield, choose artifact, creature, enchantment, instant, or sorcery.
Spells you cast of the chosen type cost less to cast.
Cloud Dragon
Cloud Dragon can block only creatures with flying.
Clone
You may have Clone enter the battlefield as a copy of any creature on the battlefield.
Clockwork Beast
Clockwork Avian
Clockwork Avian enters the battlefield with four +1/+0 counters on it.
At end of combat, if Clockwork Avian attacked or blocked this combat, remove a +1/+0 counter from it.
, : Put up to X +1/+0 counters on Clockwork Avian. This ability can't cause the total number of +1/+0 counters on Clockwork Avian to be greater than four. Activate this ability only during your upkeep.
Clever Impersonator
You may have Clever Impersonator enter the battlefield as a copy of any nonland permanent on the battlefield.
Cleanse
Destroy all black creatures.
City of Brass
Whenever City of Brass becomes tapped, it deals 1 damage to you.
: Add one mana of any color to your mana pool.