Chorus of the Tides | Creature | Siren | Flying
Heroic — Whenever you cast a spell that targets Chorus of the Tides, scry 1. (To scry 1, look at the top card of your library, then you may put that card on the bottom of your library.) | Steve Prescott
Crypsis | Instant | | Target creature you control gains protection from creatures your opponents control until end of turn. Untap it. | Daarken
Deepwater Hypnotist | Creature | Merfolk Wizard | Inspired — Whenever Deepwater Hypnotist becomes untapped, target creature an opponent controls gets -3/-0 until end of turn. | Christopher Moeller
Divination | Sorcery | | Draw two cards. | Willian Murai
Evanescent Intellect | Enchantment | Aura | Enchant creature
Enchanted creature has "{1}{U}, {T}: Target player mills three cards." | Dan Scott
Floodtide Serpent | Creature | Serpent | Floodtide Serpent can't attack unless you return an enchantment you control to its owner's hand. (This cost is paid as attackers are declared.) | Steven Belledin
Nullify | Instant | | Counter target creature or Aura spell. | Adam Paquette
Nyxborn Triton | Enchantment Creature | Merfolk | Bestow {4}{U} (If you cast this card for its bestow cost, it's an Aura spell with enchant creature. It becomes a creature again if it's not attached to a creature.)
Enchanted creature gets +2/+3. | Clint Cearley
Retraction Helix | Instant | | Until end of turn, target creature gains "{T}: Return target nonland permanent to its owner's hand." | Phill Simmer
Sphinx's Disciple | Creature | Human Wizard | Flying
Inspired — Whenever Sphinx's Disciple becomes untapped, draw a card. | Ryan Alexander Lee
Stratus Walk | Enchantment | Aura | Enchant creature
When Stratus Walk enters the battlefield, draw a card.
Enchanted creature has flying. (It can't be blocked except by creatures with flying or reach.)
Enchanted creature can block only creatures with flying. | Aaron Miller
Sudden Storm | Instant | | Tap up to two target creatures. Those creatures don't untap during their controllers' next untap steps. Scry 1. (Look at the top card of your library. You may put that card on the bottom of your library.) | Adam Paquette