MTG

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

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

Psionic Blast deals 4 damage to any target and 2 damage to you.

{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...

Enchant enchantment At the beginning of the upkeep of enchanted enchantment's controller, that player may pay any amount of mana. Power Leak deals ...

Pirate Ship can't attack unless defending player controls an Island. {T}: Pirate Ship deals 1 damage to any target. When you control no Islands, sa...

Enchant creature {W}: Enchanted creature gets +1/+1 until end of turn.

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}.

Change the text of target spell or permanent by replacing all instances of one color word with another. (For example, you may change "target black ...

Tap all lands target player controls and that player loses all unspent mana.

Flying (This creature can't be blocked except by creatures with flying or reach.)

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.)

Whenever a Forest an opponent controls becomes tapped, you gain 1 life.

Counter target spell.

You may have Copy Artifact enter the battlefield as a copy of any artifact on the battlefield, except it's an enchantment in addition to its other ...

Target creature gains flying until end of turn.

Cast this spell only during combat before blockers are declared. Target creature defending player controls can block any number of creatures this t...

Enchant creature Enchanted creature can't be blocked except by Walls.

Enchant creature Enchanted creature has flying.