Bottle-Cap Blast
Instant
Improvise (Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for 
.)
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 "
, Sacrifice this token: Add one mana of any color.")
Liiga Smilshkalne
Fallout (PIP)
• #55Rulings
For a planeswalker, excess damage means damage in excess of the planeswalker's loyalty (the number of loyalty counters it has on it). For a battle, excess damage means damage in excess of the battle's defense (the number of defense counters it has on it).
(wotc • 2024-03-08)
Excess damage has been dealt to a creature if the damage dealt to it is greater than lethal damage. Usually, this means damage greater than its toughness, although damage already marked on the creature is taken into account.
(wotc • 2024-03-08)
Improvise doesn't change Bottle-Cap Blast's mana cost or mana value, and it can't reduce Bottle-Cap Blast's cost below {R}.
(wotc • 2024-03-08)
Rulings
For a planeswalker, excess damage means damage in excess of the planeswalker's loyalty (the number of loyalty counters it has on it). For a battle, excess damage means damage in excess of the battle's defense (the number of defense counters it has on it).
(wotc • 2024-03-08)
Excess damage has been dealt to a creature if the damage dealt to it is greater than lethal damage. Usually, this means damage greater than its toughness, although damage already marked on the creature is taken into account.
(wotc • 2024-03-08)
Improvise doesn't change Bottle-Cap Blast's mana cost or mana value, and it can't reduce Bottle-Cap Blast's cost below {R}.
(wotc • 2024-03-08)