Lands you control are Plains.Nonland permanents you control are white. The same is true for spells you control and nonland cards you own that aren't on the battlefield.You may spend white mana as though it were mana of any color. You may spend other mana only as though it were colorless mana.
FlyingWhenever Swamp Mosquito attacks and isn't blocked, defending player gets a poison counter. (A player with ten or more poison counters loses the game.)
Pirate Ship can't attack unless defending player controls an Island.: Pirate Ship deals 1 damage to any target.When you control no Islands, sacrifice Pirate Ship.
The next time a source of your choice would deal damage to any target this turn, prevent that damage. If damage from a red source is prevented this way, Honorable Passage deals that much damage to the source's controller.
You may choose not to untap Giant Oyster during your untap step.: For as long as Giant Oyster remains tapped, target tapped creature doesn't untap during its controller's untap step, and at the beginning of each of your draw steps, put a -1/-1 counter on that creature. When Giant Oyster leaves the battlefield or becomes untapped, remove all -1/-1 counters...