Flying

When Aethertide Whale enters the battlefield, you get six (six energy counters).

Pay : Return Aethertide Whale to its owner's hand.

If a source would deal damage to a player, you may prevent X of that damage, where X is the number of Clerics you control.

Each player chooses a nonland permanent they control. Return all nonland permanents not chosen this way to their owners' hands. Then you draw a card for each opponent who has more cards in their hand than you.

Return all nonland permanents to their owners' hands.

Miracle (You may cast this card for its miracle cost when you draw it if it's the first card you drew this turn.)

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.)

As long as Grist, the Hunger Tide isn't on the battlefield, it's a 1/1 Insect creature in addition to its other types.

+1: Create a 1/1 black and green Insect creature token, then mill a card. If an Insect card was milled this way, put a loyalty counter on Grist and repeat this process.

−2: You may sacrifice a creature. When you do, destroy target creature or planeswalker.

−5: Each opponent loses life equal to the number of creature cards in your graveyard.

You may cast Harbinger of the Tides as though it had flash if you pay more to cast it. (You may cast it any time you could cast an instant.)

When Harbinger of the Tides enters the battlefield, you may return target tapped creature an opponent controls to its owner's hand.

Trample

Daybound (If a player casts no spells during their own turn, it becomes night next turn.)

Until end of turn, whenever a player taps an Island for mana, that player adds an additional .

Whenever you cast a spell, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

+1: Conjure a card named Kraken Hatchling into your hand.

+1: Untap target creature or land. Prevent all damage that would be dealt to and dealt by that permanent until your next turn.

−3: You may sacrifice a Kraken. If you do, create an 8/8 blue Kraken creature token.

Whenever Lorthos, the Tidemaker attacks, you may pay . If you do, tap up to eight target permanents. Those permanents don't untap during their controllers' next untap steps.

Exile all graveyards.

Delve (Each card you exile from your graveyard while casting this spell pays for .)

Flying

Murktide Regent enters the battlefield with a +1/+1 counter on it for each instant and sorcery card exiled with it.

Whenever an instant or sorcery card leaves your graveyard, put a +1/+1 counter on Murktide Regent.

Fading 5 <I>(This enchantment enters the battlefield with five fade counters on it. At the beginning of your upkeep, remove a fade counter from it. If you can't, sacrifice it.)</I>

Remove a fade counter from Parallax Tide: Exile target land.

When Parallax Tide leaves the battlefield, each player returns to the battlefield all cards they own exiled with Parallax Tide.

Choose one —

• Draw three cards.

• Return up to two target creatures to their owners' hands.

Tap all blue creatures.

Flying

At the beginning of your upkeep, return an enchantment you control to its owner's hand.

Vigilance

When Riptide Crab dies, draw a card.

Whenever Riptide Entrancer deals combat damage to a player, you may sacrifice it. If you do, gain control of target creature that player controls. (This effect lasts indefinitely.)

Morph (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its morph cost.)

: Change Riptide Mangler's base power to target creature's power. <I>(This effect lasts indefinitely.)</I>

As Riptide Replicator enters the battlefield, choose a color and a creature type.

Riptide Replicator enters the battlefield with X charge counters on it.

, : Create an X/X creature token of the chosen color and type, where X is the number of charge counters on Riptide Replicator.

Morph (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its morph cost.)

When Riptide Survivor is turned face up, discard two cards, then draw three cards.

Create a tapped 2/2 black Zombie creature token for each instant and sorcery card in your graveyard.

Exploit (When this creature enters the battlefield, you may sacrifice a creature.)

When Rot-Tide Gargantua exploits a creature, each opponent sacrifices a creature.

, Discard a card: Create a 0/3 blue Crab creature token.

Delirium — Crabs you control get +1/+1 as long as there are four or more card types among cards in your graveyard.

Choose one —

• Destroy all creatures with power 2 or less.

• Destroy all creatures with power 3 or greater.

Entwine—Sacrifice two lands. (Choose both if you pay the entwine cost.)

Land creatures you control have flying.

Whenever a land enters the battlefield under your control, if you control seven or more lands, up to one target land you control becomes a 3/3 Elemental creature with haste. It's still a land.

Devoid (This card has no color.)

Other colorless creatures you control get +0/+1.

Kicker (You may pay an additional as you cast this spell.)

When Tide Shaper enters the battlefield, if it was kicked, target land becomes an Island for as long as Tide Shaper remains on the battlefield.

Tide Shaper gets +1/+1 as long as an opponent controls an Island.

When Tidebinder Mage enters the battlefield, tap target red or green creature an opponent controls. That creature doesn't untap during its controller's untap step for as long as you control Tidebinder Mage.

, : You may tap or untap another target creature.

Landfall — Whenever a land enters the battlefield under your control, you may untap Tideforce Elemental.

Flying

Deathtouch (Any amount of damage this deals to a creature is enough to destroy it.)

: Target land becomes the basic land type of your choice until end of turn. Activate only during your turn.

Tidewalker enters the battlefield with a time counter on it for each Island you control.

Vanishing (At the beginning of your upkeep, remove a time counter from this creature. When the last is removed, sacrifice it.)

Tidewalker's power and toughness are each equal to the number of time counters on it.

Simultaneously, all phased-out creatures phase in and all creatures with phasing phase out.

Creatures your opponents control get -2/-0 until end of turn.