Collective Inferno [ECL - 132]

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.)
As this enchantment enters, choose a creature type.
Double all damage that sources you control of the chosen type would deal.

Rarity: Rare

#: 132

Card Type: Enchantment, Enchantment

Card Color: R

Casting Cost: {3}{R}{R}