Timeshifted

Fear (This creature can't be blocked except by artifact creatures and/or black creatures.) Whenever Shadowmage Infiltrator deals combat damage to ...

Flying At the beginning of your upkeep, sacrifice Nicol Bolas unless you pay {U}{B}{R}. Whenever Nicol Bolas deals damage to an opponent, that play...

Flash When Mystic Snake enters the battlefield, counter target spell.

Merieke Ri Berit doesn't untap during your untap step. {T}: Gain control of target creature for as long as you control Merieke Ri Berit. When Meri...

Flying, vigilance, haste

You win the game if you control a land of each basic land type and a creature of each color.

Morph {1}{U} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.) When Willbender is turned f...

Buyback {5} (You may pay an additional {5} as you cast this spell. If you do, put this card into your hand as it resolves.) Draw a card.

{U}{U}, Sacrifice a Wizard: Counter target spell. Morph {U} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time f...

Enchant creature Enchanted creature gets +3/+3. At the beginning of the upkeep of enchanted creature's controller, put a -1/-1 counter on that cr...

Flying White spells and black spells you cast cost {1} less to cast.

{T}: Draw a card and reveal it. If it isn't a land card, discard it.

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

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

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, ...

When Ovinomancer enters the battlefield, sacrifice it unless you return three basic lands you control to their owner's hand. {T}, Return Ovinomanc...

Mistform Ultimus is every creature type (even if this card isn't on the battlefield).

{T}: Destroy target creature with islandwalk.

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

Trample Leviathan enters the battlefield tapped and doesn't untap during your untap step. At the beginning of your upkeep, you may sacrifice two ...

You may choose not to untap Giant Oyster during your untap step. {T}: For as long as Giant Oyster remains tapped, target tapped creature doesn't u...

Flying {U}{U}{U}: Regenerate Ghost Ship.

Flying

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