Blast Zone [War of the Spark]

Set: War of the Spark Type: Land Rarity: Rare Blast Zone enters the battlefield with a charge counter on it.{T}: Add {C}.{X}{X}, {T}: Put X charge counters on Blast Zone.{3}, {T}, Sacrifice Blast Zone: Destroy each nonland permanent with converted mana cost equal to the number of charge counters on Blast Zone.