Backfire

Enchant creature
Whenever enchanted creature deals damage to you, this Aura deals that much damage to that creature's controller.

Loxodon Warhammer

Equipped creature gets +3/+0 and has trample and lifelink.
Equip {3}

Unsummon

Return target creature to its owner's hand.

Sand Silos

This land enters tapped.
You may choose not to untap this land during your untap step.
At the beginning of your upkeep, if this land is tapped, put a storage counter on it.
{T}, Remove any number of storage counters from this land: Add {U} for each storage counter removed this way.

Trade Routes

{1}: Return target land you control to its owner's hand.
{1}, Discard a land card: Draw a card.

Counterspell

Merfolk Looter

Star Compass

This artifact enters tapped.
{T}: Add one mana of any color that a basic land you control could produce.

Sky Diamond

This artifact enters tapped.
{T}: Add {U}.

Imaginary Pet

At the beginning of your upkeep, if you have a card in hand, return this creature to its owner's hand.

Feldon's Cane

{T}, Exile this artifact: Shuffle your graveyard into your library.

Pit Trap

{2}, {T}, Sacrifice this artifact: Destroy target attacking creature without flying. It can't be regenerated.

Wayfarer's Bauble

{2}, {T}, Sacrifice this artifact: Search your library for a basic land card, put that card onto the battlefield tapped, then shuffle.

Merfolk of the Pearl Trident

Sol Ring

Sun Quan, Lord of Wu

Creatures you control have horsemanship. (They can't be blocked except by creatures with horsemanship.)

Tormod's Crypt

{T}, Sacrifice this artifact: Exile target player's graveyard.

Thought Courier

Fellwar Stone

{T}: Add one mana of any color that a land an opponent controls could produce.

Man-o'-War

When this creature enters, return target creature to its owner's hand.

Archivist

Howling Mine

At the beginning of each player's draw step, if this artifact is untapped, that player draws an additional card.

Wu Infantry

Kraken's Eye

Whenever a player casts a blue spell, you may gain 1 life.

Giant Octopus

Manta Riders

{U}: This creature gains flying until end of turn.

Lord of Atlantis

Other Merfolk get +1/+1 and have islandwalk. (They can't be blocked as long as defending player controls an Island.)

Remote Isle

This land enters tapped.
{T}: Add {U}.
Cycling {2} ({2}, Discard this card: Draw a card.)

Beast of Burden

Beast of Burden's power and toughness are each equal to the number of creatures on the battlefield.

Vodalian Soldiers

Daring Apprentice

{T}, Sacrifice this creature: Counter target spell.

Straw Soldiers

Disruptive Student

{T}: Counter target spell unless its controller pays {1}.

Control Magic

Enchant creature
You control enchanted creature.

Giant Crab

{U}: This creature gains shroud until end of turn. (It can't be the target of spells or abilities.)

Island

Coral Eel

Borrowing 100,000 Arrows

Draw a card for each tapped creature target opponent controls.

Spellbook

Gaseous Form

Enchant creature
Prevent all combat damage that would be dealt to and dealt by enchanted creature.

Abduction

Enchant creature
When this Aura enters, untap enchanted creature.
You control enchanted creature.
When enchanted creature dies, return that card to the battlefield under its owner's control.

Fugitive Wizard

Bottle Gnomes

Sacrifice this creature: You gain 3 life.

Seasinger

When you control no Islands, sacrifice this creature.
You may choose not to untap this creature during your untap step.
{T}: Gain control of target creature whose controller controls an Island for as long as you control this creature and this creature remains tapped.

Apprentice Wizard

Water Elemental

Braingeyser

Ice Floe

You may choose not to untap this land during your untap step.
{T}: Tap target creature without flying that's attacking you. It doesn't untap during its controller's untap step for as long as this land remains tapped.

Sisay's Ring

Relic Bind

Enchant artifact an opponent controls
Whenever enchanted artifact becomes tapped, choose one —
• This Aura deals 1 damage to target player or planeswalker.
• Target player gains 1 life.

Champion's Victory

Cast this spell only during the declare attackers step and only if you've been attacked this step.
Return target attacking creature to its owner's hand.

Lumengrid Warden

Curiosity

Enchant creature
Whenever enchanted creature deals damage to an opponent, you may draw a card.

Dragon Engine

{2}: This creature gets +1/+0 until end of turn.

Energy Tap

Tap target untapped creature you control. If you do, add an amount of {C} equal to that creature's mana value.