Megamorph 4U (You may cast this card face down as a 2/2 creature for 3. Turn it face up any time for its megamorph cost and put a +1/+1 counter on it.)

When Silumgar Spell-Eater is turned face up, counter target spell unless its controller pays 3.

As an additional cost to cast Silumgars Scorn, you may reveal a Dragon card from your hand.

Counter target spell unless its controller pays 1. If you revealed a Dragon card or controlled a Dragon as you cast Silumgars Scorn, counter that spell instead.

Look at the top six cards of your library. You may reveal an instant or sorcery card from among them and put it into your hand. Put the rest on the bottom of your library in a random order.

As an additional cost to cast Silvergill Adept, reveal a Merfolk card from your hand or pay 3.

When Silvergill Adept enters the battlefield, draw a card.

Counter target spell.

Surveil 1. (Look at the top card of your library. You may put that card into your graveyard.)

Return target spell or nonland permanent an opponent controls to its owners hand.

As Soporific Springs enters the battlefield, you may pay 3 life. If you dont, it enters the battlefield tapped.

TAP: Add U.

When Sinuous Benthisaur enters the battlefield, look at the top X cards of your library, where X is the number of Caves you control plus the number of Cave cards in your graveyard. Put two of those cards into your hand and the rest on the bottom of your library in a random order.

U: Sinuous Striker gets +1/-1 until end of turn.

Eternalize-3UU, Discard a card. (3UU, Discard a card, Exile this card from your graveyard: Create a token thats a copy of it, except its a 4/4 black Zombie Naga Warrior with no mana cost. Eternalize only as a sorcery.)

Flying

Whenever you cast a Spirit or Arcane spell, you may draw a card.

Raid - Siren Reaver costs 1 less to cast if you attacked with a creature this turn.

Flying

Flying

U, Sacrifice Siren Stormtamer: Counter target spell or ability that targets you or a creature you control.