MTG Single

Collective Inferno (Extended Art) [Lorwyn Eclipsed]

$1.58
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Set: Lorwyn Eclipsed
Type: Enchantment
Rarity: Rare
Cost: {3}{R}{R}
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.