Crashing Tide

Bounce-and-draw on a sorcery is a known quantity: tempo at a price, a card that buys you a turn while replacing itself. What this one bolts on is conditional flash, gated behind a Merfolk in play, and that gate is the entire pitch. The base effect at sorcery speed is a fine but unspectacular tool: clear a blocker before your alpha strike, return your own creature to hand in response to nothing (only during your own main phase), or reset an opponent's enters-the-battlefield creature. With a single Merfolk on board it becomes an instant, and the strategic axis shifts hard. Now it is a combat ambush that removes an attacker at declaration, a reactive answer you hold up while keeping mana for a turn that stays quiet, and a way to save your own creature from a removal spell mid-turn. The reward structure points exactly where you would expect: the card is best in a deck already committed to Merfolk, so its instant-speed ceiling is paid for by the same board presence that makes the rest of that deck work. It is a clean example of pricing a flexible utility spell at sorcery speed and then handing instant speed to the deck that earns it, rather than printing the instant outright and balancing the cost upward.