Pact of Negation

Counter target spell.
At the beginning of your next upkeep, pay {3}{U}{U}. If you don't, you lose the game.

Daze

You may return an Island you control to its owner's hand rather than pay this spell's mana cost.
Counter target spell unless its controller pays {1}.

You may pay 1 life and exile a blue card from your hand rather than pay this spell's mana cost.
Counter target spell.

Until end of turn, whenever a player taps a Swamp for mana, that player adds an additional {B}.

Flying
When Palinchron enters, untap up to seven lands.
{2}{U}{U}: Return Palinchron to its owner's hand.

Until end of turn, whenever a player taps an Island for mana, that player adds an additional {U}.

({T}: Add {U} or {B}.)
As Watery Grave enters, you may pay 2 life. If you don't, it enters tapped.