Sea Troll

{U}: Regenerate this creature. Activate only if this creature blocked or was blocked by a blue creature this turn.

Ghost Ship

Flying
{U}{U}{U}: Regenerate this creature.

Reconstruction

Return target artifact card from your graveyard to your hand.

Flood

{U}{U}: Tap target creature without flying.

Tundra Wolves

First strike (This creature deals combat damage before creatures without first strike.)

Dragon Engine

{2}: This creature gets +1/+0 until end of turn.

Island

Water Elemental

Illusionary Forces

Flying
Cumulative upkeep {U} (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)

Tobias Andrion

Clone

You may have this creature enter as a copy of any creature on the battlefield.

Azure Drake

Phantasmal Forces

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

Pirate Ship

This creature can't attack unless defending player controls an Island.
{T}: This creature deals 1 damage to any target.
When you control no Islands, sacrifice this creature.

Mishra's Factory

{T}: Add {C}.
{1}: This land becomes a 2/2 Assembly-Worker artifact creature until end of turn. It's still a land.
{T}: Target Assembly-Worker creature gets +1/+1 until end of turn.

Plains

Enervate

Tap target artifact, creature, or land.
Draw a card at the beginning of the next turn's upkeep.

Disenchant

Balance

Each player chooses a number of lands they control equal to the number of lands controlled by the player who controls the fewest, then sacrifices the rest. Players discard cards and sacrifice creatures the same way.

Juggernaut

This creature attacks each combat if able.
This creature can't be blocked by Walls.

Sunken City

At the beginning of your upkeep, sacrifice this enchantment unless you pay {U}{U}.
Blue creatures get +1/+1.

Drain Power

Target player activates a mana ability of each land they control. Then that player loses all unspent mana and you add the mana lost this way.