If you tap three Merfolk, you can draw a card
maybe Trigon of Infestation
Eventually, we'll cast enough Treasure Hunts that all we'll have left in our deck is lands, so the last copy should empty our library, allowing us to win the game with the static Laboratory Maniac ability on Jace, Wielder of Mysteries
Magica De Spell, The Midas Touch Ruby-amethyst wasnt the only meta dominating deck on the market in Lorcana set two, with Tamatoa item decks also proving a worthy contender and winning plenty of tournaments
"[Type]cycling [cost]" means "[Cost], Discard this card: Search your library for a [type] card, reveal it, put it into your hand, then shuffle." This type is usually a subtype (as in "Mountaincycling") but can be any card type, subtype, supertype, or combination thereof (as in "basic landcycling")