MTG

Enchant artifact You control enchanted artifact.

Players skip their untap steps. At the beginning of your upkeep, sacrifice Stasis unless you pay {U}.

Counter target spell with converted mana cost X. (For example, if that spell's mana cost is {3}{U}{U}, X is 5.)

Whenever an opponent casts a creature spell, Soul Barrier deals 2 damage to that player unless they pay {2}.

Flying Whenever Sibilant Spirit attacks, defending player may draw a card.

Islandwalk (This creature can't be blocked as long as defending player controls an Island.)

When you control no Islands, sacrifice Seasinger. You may choose not to untap Seasinger during your untap step. {T}: Gain control of target creatur...

{U}: Sea Spirit gets +1/+0 until end of turn.

Sea Serpent can't attack unless defending player controls an Island. When you control no Islands, sacrifice Sea Serpent.

Counter target creature spell.

Whenever Reef Pirates deals damage to an opponent, that player puts the top card of their library into their graveyard.

Discard X cards, then return a card from your graveyard to your hand for each card discarded this way. Exile Recall.

Enchant land Whenever enchanted land becomes tapped, Psychic Venom deals 2 damage to that land's controller.

{T}: Prodigal Sorcerer deals 1 damage to any target.

Counter target spell unless its controller pays {X}. If that player doesn't, they tap all lands with mana abilities they control and lose all unspe...

Flying

Enchant land As Phantasmal Terrain enters the battlefield, choose a basic land type. Enchanted land is the chosen type.

Flying At the beginning of your upkeep, sacrifice Phantasmal Forces unless you pay {U}.

{1}{U}, {T}: Untap target artifact an opponent controls and gain control of it until end of turn. It gains haste until end of turn. When you lose c...

Change the text of target spell or permanent by replacing all instances of one basic land type with another. (For example, you may change "swampwal...

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

{T}, Sacrifice two lands: Draw three cards, then discard one of them.

Islandwalk (This creature can't be blocked as long as defending player controls an Island.)