These cards are mostly lacking in restrictions, so they can be used as a generic draw and mill engine to improve consistency for another archetype
6 Ariel, Singing Mermaid Ursula Just Doesn't Do It Like Ariel The little, human-fixated, mermaid always seems to one-up Ursula, especially when it comes to singing
You can also splash in the Adventurer engine, a powerful set of cards from The Grand Creators that allows you to put out an omni-negate before you start your plays, increasing your board presence and insulating your combos from hand-traps
Swanna's second move is called Air Slash which does 70 damage for three energy cards, two colorless and one water, however after using this move, you must discard an energy card attached to Swanna
because you can't bring out Shining Star, but you can easily bring out Lightning Master