Each creature you control assigns combat damage equal to its toughness rather than its power.
{G}: Target creature with defender can attack this turn as though it didn't have defender.
{2}{G}: Creatures you control get +0/+1 until end of turn.
{1}{U}
Blink of an Eye
Instant
Kicker {1}{U} (You may pay an additional {1}{U} as you cast this spell.)
Return target nonland permanent to its owner's hand. If this spell was kicked, draw a card.
{1}{U}{U}
Broken Concentration
Instant
Counter target spell.
Madness {3}{U} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)
{2}{U}
Circular Logic
Instant
Counter target spell unless its controller pays {1} for each card in your graveyard.
Madness {U} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)
{5}{U}
Cold-Water Snapper
Creature - Turtle
Hexproof (This creature can't be the target of spells or abilities your opponents control.)
4 /
5
{3}{U}
Crystacean
Creature - Crab
Flash
1 /
6
{9}
Drownyard Behemoth
Creature - Eldrazi Crab
Flash (You may cast this spell any time you could cast an instant.)
Emerge {7}{U} (You may cast this spell by sacrificing a creature and paying the emerge cost reduced by that creature's mana value.)
Drownyard Behemoth has hexproof as long as it entered the battlefield this turn.
5 /
7
{2}{W}
Frantic Purification
Instant
Destroy target enchantment.
Madness {W} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)
{3}{G}
Fruit of the First Tree
Enchantment - Aura
Enchant creature
When enchanted creature dies, you gain X life and draw X cards, where X is its toughness.
{2}{W}
Gauntlets of Light
Enchantment - Aura
Enchant creature
Enchanted creature gets +0/+2 and assigns combat damage equal to its toughness rather than its power.
Enchanted creature has "{2}{W}: Untap this creature."
{G}{U}
Growth Spiral
Instant
Draw a card. You may put a land card from your hand onto the battlefield.
{U}
Hard Evidence
Sorcery
Create a 0/3 blue Crab creature token.
Investigate. (Create a Clue token. It's an artifact with "{2}, Sacrifice this artifact: Draw a card.")
{2}{W}
Heliod's Pilgrim
Creature - Human Cleric
When Heliod's Pilgrim enters the battlefield, you may search your library for an Aura card, reveal it, put it into your hand, then shuffle.
1 /
2
{1}{W}{U}
High Alert
Enchantment
Each creature you control assigns combat damage equal to its toughness rather than its power.
Creatures you control can attack as though they didn't have defender.
{2}{W}{U}: Untap target creature.
{2}{U}
Horseshoe Crab
Creature - Crab
{U}: Untap Horseshoe Crab.
1 /
3
{2}{G/W}
Huatli, the Sun's Heart
Legendary Planeswalker - Huatli
Each creature you control assigns combat damage equal to its toughness rather than its power.
-3: You gain life equal to the greatest toughness among creatures you control.
L:
7
{2}{U}
Ichthyomorphosis
Enchantment - Aura
Enchant creature
Enchanted creature loses all abilities and is a blue Fish with base power and toughness 0/1.
{1}{U}
Just the Wind
Instant
Return target creature to its owner's hand.
Madness {U} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)
{1}{U}
Kasmina's Transmutation
Enchantment - Aura
Enchant creature
Enchanted creature loses all abilities and has base power and toughness 1/1.
{4}{U}{U}
King Crab
Creature - Crab
{1}{U}, {T}: Put target green creature on top of its owner's library.
4 /
5
{2}{U}{U}
Lu Xun, Scholar General
Legendary Creature - Human Soldier
Horsemanship (This creature can't be blocked except by creatures with horsemanship.)
Whenever Lu Xun, Scholar General deals damage to an opponent, you may draw a card.
1 /
3
{2}
Mask of Memory
Artifact - Equipment
Whenever equipped creature deals combat damage to a player, you may draw two cards. If you do, discard a card.
Equip {1} ({1}: Attach to target creature you control. Equip only as a sorcery.)
{4}{U}{U}
Mental Journey
Instant
Draw three cards.
Basic landcycling {1}{U} ({1}{U}, Discard this card: Search your library for a basic land card, reveal it, put it into your hand, then shuffle.)
{1}{W}{W}
Mesa Enchantress
Creature - Human Druid
Whenever you cast an enchantment spell, you may draw a card.
0 /
2
{3}{U}
Mistford River Turtle
Creature - Turtle
Whenever Mistford River Turtle attacks, another target attacking non-Human creature can't be blocked this turn.
1 /
5
{2}{W}
Moon-Blessed Cleric
Creature - Human Elf Cleric
Divine Intervention -- When Moon-Blessed Cleric enters the battlefield, you may search your library for an enchantment card, reveal it, then shuffle and put that card on top.
3 /
2
{1}{U}
Nagging Thoughts
Sorcery
Look at the top two cards of your library. Put one of them into your hand and the other into your graveyard.
Madness {1}{U} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)
{U}
Obsessive Search
Instant
Draw a card.
Madness {U} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)
{1}{U}
Omen of the Sea
Enchantment
Flash
When Omen of the Sea enters the battlefield, scry 2, then draw a card.
{2}{U}, Sacrifice Omen of the Sea: Scry 2.
{3}{U}
Oraxid
Creature - Crab Beast
Protection from red
2 /
3
{3}{U}
Rain of Revelation
Instant
Draw three cards, then discard a card.
{1}{W}
Reprobation
Enchantment - Aura
Enchant creature
Enchanted creature loses all abilities and is a Coward creature with base power and toughness 0/1. (It keeps all supertypes but loses all other types and creature types.)
{1}{W}{U}
Riptide Crab
Creature - Crab
Vigilance
When Riptide Crab dies, draw a card.
1 /
3
{1}{U}
Riptide Turtle
Creature - Turtle
Flash
Defender
0 /
5
{1}{G}{W}
Satyr Enchanter
Creature - Satyr Druid
Whenever you cast an enchantment spell, draw a card.
2 /
2
{4}{G/U}{G/U}
Scuttlegator
Creature - Crab Turtle Crocodile
Defender
{6}{G/U}{G/U}: Adapt 3. (If this creature has no +1/+1 counters on it, put three +1/+1 counters on it.)
As long as Scuttlegator has a +1/+1 counter on it, it can attack as though it didn't have defender.
6 /
6
{1}{U}
Scuttletide
Enchantment
{1}, 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.
{G}{U}
Shambleshark
Creature - Shark Crab
Flash (You may cast this spell any time you could cast an instant.)
Evolve (Whenever a creature enters the battlefield under your control, if that creature has greater power or toughness than this creature, put a +1/+1 counter on this creature.)
2 /
1
{2}{G}{U}
Sharktocrab
Creature - Shark Octopus Crab
{2}{G}{U}: Adapt 1. (If this creature has no +1/+1 counters on it, put a +1/+1 counter on it.)
Whenever one or more +1/+1 counters are put on Sharktocrab, tap target creature an opponent controls. That creature doesn't untap during its controller's next untap step.
4 /
4
{2}{G/U}
Shielding Plax
Enchantment - Aura
({G/U} can be paid with either {G} or {U}.)
Enchant creature
When Shielding Plax enters the battlefield, draw a card.
Enchanted creature can't be the target of spells or abilities your opponents control.
{U}
Shore Keeper
Creature - Trilobite
{7}{U}, {T}, Sacrifice Shore Keeper: Draw three cards.
0 /
3
{3}
Simic Keyrune
Artifact
{T}: Add {G} or {U}.
{G}{U}: Simic Keyrune becomes a 2/3 green and blue Crab artifact creature with hexproof until end of turn. (It can't be the target of spells or abilities your opponents control.)
{1}
Skeleton Key
Artifact - Equipment
Equipped creature has skulk. (It can't be blocked by creatures with greater power.)
Whenever equipped creature deals combat damage to a player, you may draw a card. If you do, discard a card.
Equip {2}
{3}{U}
Skitter Eel
Creature - Fish Crab
{2}{U}: Adapt 2. (If this creature has no +1/+1 counters on it, put two +1/+1 counters on it.)
3 /
3
{2}{U}
Skittering Crustacean
Creature - Crab
{6}{U}: Monstrosity 4. (If this creature isn't monstrous, put four +1/+1 counters on it and it becomes monstrous.)
As long as Skittering Crustacean is monstrous, it has hexproof. (It can't be the target of spells or abilities your opponents control.)
2 /
3
{W}
Solid Footing
Enchantment - Aura
Flash
Enchant creature
Enchanted creature gets +1/+1.
As long as enchanted creature has vigilance, it assigns combat damage equal to its toughness rather than its power.
{4}{U}
Specimen Collector
Creature - Vedalken Wizard
When Specimen Collector enters the battlefield, create a 1/1 green Squirrel creature token and a 0/3 blue Crab creature token.
When Specimen Collector dies, create a token that's a copy of target token you control.
2 /
1
{2}{G}{ // }{4}{U}{U}
Spring // Mind
Sorcery // Instant
Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.
Aftermath (Cast this spell only from your graveyard. Then exile it.)
Draw two cards.
{G}{W}
Sterling Grove
Enchantment
Other enchantments you control have shroud. (They can't be the targets of spells or abilities.)
{1}, Sacrifice Sterling Grove: Search your library for an enchantment card, reveal it, then shuffle and put that card on top.
{1}{W}
Strength of Isolation
Enchantment - Aura
Enchant creature
Enchanted creature gets +1/+2 and has protection from black.
Madness {W} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)
{5}{U}
Thassa's Bounty
Sorcery
Draw three cards. Target player mills three cards.
{3}{U}
Thassa's Emissary
Enchantment Creature - Crab
Bestow {5}{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.)
Whenever Thassa's Emissary or enchanted creature deals combat damage to a player, draw a card.
Enchanted creature gets +3/+3.
3 /
3
{2}{G}
Treefolk Umbra
Enchantment - Aura
Enchant creature
Enchanted creature gets +0/+2 and assigns combat damage equal to its toughness rather than its power.
Totem armor (If enchanted creature would be destroyed, instead remove all damage from it and destroy this Aura.)
{8}
Vexing Scuttler
Creature - Eldrazi Crab
Emerge {6}{U} (You may cast this spell by sacrificing a creature and paying the emerge cost reduced by that creature's mana value.)
When you cast this spell, you may return target instant or sorcery card from your graveyard to your hand.
4 /
5
{2}{G}{W}{U}
Waveskimmer Aven
Creature - Bird Soldier
Flying
Exalted (Whenever a creature you control attacks alone, that creature gets +1/+1 until end of turn.)
2 /
4
{1}
Zephyr Boots
Artifact - Equipment
Equipped creature has flying.
Whenever equipped creature deals combat damage to a player, draw a card, then discard a card.
Equip {2} ({2}: Attach to target creature you control. Equip only as a sorcery.)