Revavroom appeared in a few sets in the Scarlet & Violet era, posting solid values, even though they were well short of the most expensive cards in the S&V era
As a consequence of these numerous relevant threats which survive Lightning Bolt, any deck (besides Burn) which can enable Delirium like Deaths Shadow, UR Murktide or 4c Yorion, is better off playing Unholy Heat over Lightning Bolt nowadays
Sure, Tuvasa kind of hijacks the Merfolk theme and replaces it with a more Enchantress-y build, but she does grow to immense heights rather quickly if you're throwing down the right Auras and enchantments, and Merfolk sub-synergies can certainly still flourish in a Tuvasa-led deck
Some locations may not have had their promos yet or might not know about them, its worth checking before visiting
Team Rocket's Kangaskhan ex CC - Comet Punch 30x Flip 4 coins