Shorecrasher Elemental

{U}: Exile Shorecrasher Elemental, then return it to the battlefield face down under its owner's control.
{1}: Shorecrasher Elemental gets +1/-1 or -1/+1 until end of turn.
Megamorph {4}{U} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its megamorph cost and put a +1/+1 counter on it.)

Scion of Glaciers

{U}: Scion of Glaciers gets +1/-1 until end of turn.

Flowstone Blade

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

Frostburn Weird

{U/R}: Frostburn Weird gets +1/-1 until end of turn.

Flowstone Crusher

{R}: Flowstone Crusher gets +1/-1 until end of turn.

Torchling

{R}: Untap Torchling.
{R}: Target creature blocks Torchling this turn if able.
{R}: Change the target of target spell that targets only Torchling.
{1}: Torchling gets +1/-1 until end of turn.
{1}: Torchling gets -1/+1 until end of turn.

Watercourser

{U}: Watercourser gets +1/-1 until end of turn.

Dronepack Kindred

Trample
{1}: Dronepack Kindred gets +1/+0 until end of turn.

Vildin-Pack Outcast

Trample
{R}: Vildin-Pack Outcast gets +1/-1 until end of turn.
{5}{R}{R}: Transform Vildin-Pack Outcast.

Vildin-Pack Outcast // Dronepack Kindred

Flowstone Shambler

{R}: Flowstone Shambler gets +1/-1 until end of turn.

Sinuous Striker

{U}: Sinuous Striker gets +1/-1 until end of turn.
Eternalize—{3}{U}{U}, Discard a card. ({3}{U}{U}, Discard a card, Exile this card from your graveyard: Create a token that's a copy of it, except it's a 4/4 black Zombie Naga Warrior with no mana cost. Eternalize only as a sorcery.)

Ingenious Skaab

Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)
{U}: Ingenious Skaab gets +1/-1 until end of turn.

Talonrend

Flying
{U/R}: Talonrend gets +1/-1 until end of turn.

Cavern Crawler

Mountainwalk (This creature can't be blocked as long as defending player controls a Mountain.)
{R}: Cavern Crawler gets +1/-1 until end of turn.

Aetherling

{U}: Exile Aetherling. Return it to the battlefield under its owner's control at the beginning of the next end step.
{U}: Aetherling can't be blocked this turn.
{1}: Aetherling gets +1/-1 until end of turn.
{1}: Aetherling gets -1/+1 until end of turn.

Flowstone Overseer

{R}{R}: Target creature gets +1/-1 until end of turn.

Water Servant

{U}: Water Servant gets +1/-1 until end of turn.
{U}: Water Servant gets -1/+1 until end of turn.

Flowstone Hellion

Haste
{0}: Flowstone Hellion gets +1/-1 until end of turn.

Flowstone Mauler

Trample
{R}: Flowstone Mauler gets +1/-1 until end of turn.

Skophos Maze-Warden

{1}: Skophos Maze-Warden gets +1/-1 until end of turn.
Whenever another creature becomes the target of an ability of a land you control named Labyrinth of Skophos, you may have Skophos Maze-Warden fight that creature. (Each deals damage equal to its power to the other.)