Promotional: City on Fire (Prerelease Foil)

Edition:	Promotional
Type:	Enchantment
Cast:
Rarity:	R
Collector #:	0135
Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for or one mana of that creature's color.) If a source you control would deal damage to a permanent or player, it deals triple that damage instead.
Pro Tip! Big, flashy, expensive effects like this are usually more trouble than they're worth - but convoke makes this enchantment much more likely to see play and be a problem.