Concerted Effort [Ravnica: City of Guilds] Navy If you control an Urza's

If you control an Urza's Mine and an Urza's Power-Plant

[-4]: Each opponent chooses an artifact

This card's converted mana cost is 6

Set: World Championship Decks 1998 Rarity: Rare

Set: The Lost Caverns of Ixalan Promos Type: Legendary Creature — Siren Pirate Rarity: Rare Cost: {1}{U} Flash

Concerted Effort [Ravnica: City of Guilds] Navy If you control an Urza'sSet: Ravnica: City of Guilds Type: Enchantment Rarity: Rare Cost: {2}{W}{W} At the beginning of each upkeep, creatures you control gain flying until end of turn if a creature you control has flying. The same is true for fear, first strike, double strike, landwalk, protection, trample, and vigilance.