Cloudstone Curio [Ravnica: City of Guilds] Human Citizen Set: Secret Lair Drop Series

Set: Secret Lair Drop Series Type: Enchantment Rarity: Rare Cost: {1}{G} Whenever a black card is put into an opponent's graveyard from anywhere

Set: Secret Lair Drop Series Type: Legendary Creature — Rat Ninja Rarity: Rare Cost: {4}{B}{B} Ninjutsu {3}{B}{B} ({3}{B}{B}

Set: Sun & Moon: Black Star Promos Type: Dragon Rarity: Promo Retreat cost: Colorless

If you control an Urza's Mine and an Urza's Tower

Cloudstone Curio [Ravnica: City of Guilds] Human Citizen Set: Secret Lair Drop SeriesSet: Ravnica: City of Guilds Type: Artifact Rarity: Rare Cost: {3} 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. It *wants* to remain a mystery, banishing the curious in favor of less inquisitive company.