Bottle-Cap Blast [Fallout]

Description

Set:	Fallout
Type:	Instant
Rarity:	Uncommon
Cost:	{4}{R}

Improvise (Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for {1}.)
Bottle-Cap Blast deals 5 damage to any target. If excess damage was dealt to a permanent this way, create that many tapped Treasure tokens. (They're artifacts with "{T}, Sacrifice this artifact: Add one mana of any color.")