Comet Storm [Worldwake Prerelease Promos] DP16 you may change "swampwalk" to

you may change "swampwalk" to "plainswalk

Set: EX: Legend Maker Type: Darkness Rarity: Rare Retreat cost: Colorless

If a Machine Xyz Monster(s) you control is destroyed by battle or an opponent’s card effect while this card is in your GY: you can banish this card and 1 Machine Xyz Monster in your GY

Set: Black & White: Black Star Promos Type: Supporter Rarity: Black Star Promo

Set: XY: Black Star Promos Type: Supporter Rarity: Promo

Comet Storm [Worldwake Prerelease Promos] DP16 you may change "swampwalk" toSet: Worldwake Prerelease Promos Type: Instant Rarity: Mythic Cost: {X}{R}{R} Multikicker {1} (You may pay an additional {1} any number of times as you cast this spell.) Choose any target, then choose another target for each time this spell was kicked. Comet Storm deals X damage to each of them.