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

Surveil 5. (Look at the top five cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.)

Surveil 2. (Look at the top two cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.) Draw a card.

Flash {U}, Sacrifice an Island: This creature can't be blocked this turn. {B}, Sacrifice a Swamp: You gain 1 life and draw a card. {U}{B}: Exile five target cards from an opponent's graveyard. Return this card from your graveyard to your hand. Activate only as a sorcery.

Whenever Marvo attacks, clash with defending player. (Each clashing player reveals the top card of their library, then puts that card on the top or bottom. A player wins if their card had a higher mana value.) Whenever you win a clash, draw a card. Then you may cast a spell from your hand with mana value 8 or less without paying its mana cost.

Surveil 2, then draw two cards. Notion Rain deals 2 damage to you. (To surveil 2, look at the top two cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.)

When Monstrosity of the Lake enters, you may pay {5}. If you do, tap all creatures your opponents control, then put a stun counter on each of those creatures. (If a permanent with a stun counter would become untapped, remove one from it instead.) Islandcycling {2} ({2}, Discard this card: Search your library for an Island card, reveal it, put it into your hand, then shuffle.)

Islandwalk (This creature can't be blocked as long as defending player controls an Island.) This creature can't attack unless there are five or more Islands on the battlefield.

Trample Islandwalk (This creature can't be blocked as long as defending player controls an Island.) Shroud (This creature can't be the target of spells or abilities.)

Creatures with power less than the number of Islands you control can't block this creature.

This creature can't be blocked as long as defending player controls an artifact.

When Brinelin enters and whenever you cast a spell with mana value 6 or greater, you may return target nonland permanent to its owner's hand. Partner (You can have two commanders if both have partner.)

Exile target creature or planeswalker. Surveil 1. (Look at the top card of your library. You may put that card into your graveyard.)

Affinity for snow lands (This spell costs {1} less to cast for each snow land you control.) When this creature enters, artifacts and creatures target opponent controls don't untap during that player's next untap step. Return three snow lands you control to their owner's hand: Return this creature to its owner's hand.

When this creature enters, return all other nonland permanents to their owners' hands. Unearth {6}{U} ({6}{U}: Return this card from your graveyard to the battlefield. It gains haste. Exile it at the beginning of the next end step or if it would leave the battlefield. Unearth only as a sorcery.)

Whenever Lorthos attacks, you may pay {8}. If you do, tap up to eight target permanents. Those permanents don't untap during their controllers' next untap steps.

When this creature enters, return each creature your opponents control with toughness X or less to its owner's hand, where X is the number of Islands you control.

This creature can't attack unless defending player controls a Swamp. When you control no Swamps, sacrifice this creature.

When this creature enters, surveil 3. (Look at the top three cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.) Threshold — This creature can't be blocked as long as there are seven or more cards in your graveyard.

This spell costs {1} less to cast for each instant and sorcery card in your graveyard.

This creature can't attack unless defending player controls an Island.

This creature can't attack unless there are seven or more cards in your graveyard.

When this creature enters, return each other creature you control to its owner's hand.

Defender Megamorph {6}{U} (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.)

{5}{U}{U}: This creature can't be blocked this turn.

Affinity for artifacts (This spell costs {1} less to cast for each artifact you control.) {5}{U}: This creature can't be blocked this turn.

This creature can't attack unless defending player controls an enchantment or an enchanted permanent.

Landfall — Whenever a land you control enters, tap target creature an opponent controls and put a stun counter on it. (If a permanent with a stun counter would become untapped, remove one from it instead.)

Shroud (This creature can't be the target of spells or abilities.) This creature gets +4/+8 as long as a library has twenty or fewer cards in it.

Trample This creature enters tapped. When this creature enters, sacrifice it unless you sacrifice five lands. This creature doesn't untap during your untap step. Whenever you play an Island, you may untap this creature.

Trample This creature enters tapped and doesn't untap during your untap step. At the beginning of your upkeep, you may sacrifice two Islands. If you do, untap this creature. This creature can't attack unless you sacrifice two Islands. (This cost is paid as attackers are declared.)

This creature doesn't untap during your untap step. {U}{U}, Sacrifice a creature: Untap this creature. Activate only during your upkeep. This creature can't attack unless defending player controls an Island. {U}{U}: This creature gets -1/-0 until end of turn and deals 1 damage to target attacking creature without flying. When you control no Islands, sacrifice this creature.

Flash This spell can't be countered. Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.) Return three lands you control to their owner's hand: Return this creature to its owner's hand.

At the beginning of your upkeep, surveil 1. To solve — There are fifteen or more cards in your graveyard. (If unsolved, solve at the beginning of your end step.) Solved — Whenever you cast a nonlegendary creature spell, copy that spell. (The copy becomes a token.)

When this creature dies, create a 3/3 blue Fish creature token with "When this token dies, create a 6/6 blue Whale creature token with 'When this token dies, create a 9/9 blue Kraken creature token.'"