Chant of Vitu-Ghazi RAV/7

Set: Ravnica: City of Guilds
Collector Code: RAV/7
Name: Chant of Vitu-Ghazi
Type: Instant
Oracle text: Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for {1} or one mana of that creature's color.) Prevent all damage that would be dealt by creatures this turn. You gain life equal to the damage prevented this way.
Rarity: Uncommon