MTG Salvation

Counter Field 1UU
Tribal Enchantment – Wizard
When ~ comes into play, choose a card type.
When an opponent plays a spell of the chosen card type, sacrifice ~ and counter that spell

Darken 1B
Instant
Destroy target non-Black non-artifact Tribal.

Redemption Chorus 2WW
Enchantment
When a black or artifact spell is cast, gain 4 life unless that Spellcaster counters that spell.

Sliceling 2BB
Creature- Horror
When Sliceling comes into play, each player looses four life.
4/4

Mark of Turning W
Enchantment
Whenever a black creature comes into play under an opponent's control, return it to its owner's hand and that player loses life equal to its power.

Quote from Kev the Walker

Mark of Turning W
Enchantment
Whenever a black creature comes into play under an opponent's control, return it to its owner's hand and that player loses life equal to its power.

That's harsh, for one mana to be able to shut down every black creature ever made. It just screams Darkest Hour control. I would even go so far as to call it b0rken.

Celebrant of Gix 4B
Creature - Zombie Cleric
When ~ comes into play add BBBBB to your mana pool.
When ~ comes into play it deals 2 damage to each other player opponent. You gain life equal to the damage dealt this way.
3/3

Edit - I just copied from Syphon Soul and missed that "other player" should have been "opponent"

Mana Disaster 2BB
Enchantment
When there is four or more mana of any type in a players mana pool, sacrifice ~ and empty that player’s mana pool.

Fountain of Life 6
Artifact
Your mana pool don't empty at the end of phases or turns.
T: Add 1 mana of any color to your mana pool.

Quote from VerzenChaos

Sulferic Mantle (1)
Artifact
All non-land permanents that produce mana lose that ability.

I think a better wording would be "Whenever a non-land permanent would produce mana, it produces no mana instead." Maybe I'm wrong, it's possible.

Treefolk Grove 1GG
Land Creature - Treefolk Forest
~ can't be played as a land.
(T: Add G to your mana pool)
2/2

Landshape U
Enchantment - Aura
Enchant Land
Enchanted Land is an Island instead of any other types.

Edit:

Landshape UUU
Enchantment - Aura
Enchant Permanent
Enchanted permanent is a land instead of any other supertypes and is an island instead of any other types.

Quote from GeminiDreams

Landshape UUU
Enchantment - Aura
Enchant Permanent
Enchanted permanent is a land instead of any other supertypes and is an island instead of any other types.

Sea's Claim costs UU less, and Aquitect's Will can't be disenchanted and can draw you a card. Your card also has crazy interactions with equipment and auras which blue should have access to. Perhaps I digress.

Soratami Cloudscaper U
Creature - Moonfolk Wizard
Flying
2, Return a land you control to it's owner's hand: You may put a land card from your hand into play.
0/2

And you are probably wondering what's the point. Well, if you do it right you can pay GGG with 4 islands and a forest. It's also makes you immune to targeted land destruction.

Mana Burn RRR
Enchantment

Whenever an opponent taps a land for mana ~ deals 2 damage to that lands controler.

Works because it makes the ability painful.

Have you ever heard of Manabarbs? That card is b0rken!

Paradise Gardener 2G
Creature - Elf Druid
Tap an untapped basic land you control: Add one mana of any color to your mana pool.
1/3

Spellblinder Faerie 2GUU
Creature - Faerie Shaman
Flash, flying
Counter target activated ability. You gain control of the source of that activated ability as long as is in play.
1/1

Quote from darksys92

Spellblinder Faerie 2GUU
Creature - Faerie Shaman
Flash, flying
Counter target activated ability. You gain control of the source of that activated ability as long as is in play.
1/1

Not to be too technical, but (1) is that supposed to be an coming into play effect? and (2) mana abilities don't use the stack. Your card doesn't hose mine at all.

Boseiju Shrine 1RG
Legendary Enchantment
~ can't be countered.
Spells and abilities you play can't be countered.

Time Fracture 4UUU
Instant
End the turn. For each spell and/or ability removed from the game this way, choose target permanent. That permanents controller sacrifices it.

Wait... I'm seeing something... the card that will hose mine will be... an untargetable permanent! -Jack

Coalition Etchings 1W
Tribal Enchantment - Flagbearer Aura
Enchant permanent
Flash
Whenever a spell or ability an opponent controls is put on the stack, if that spell or ability could target enchanted permanent but doesn't, that player changes one of its targets to target enchanted permanent.

Humble Prayers W
Instant
Remove target aura from the game. Draw a card.

Ward of Protection 2W
Enchantment
All auras’ you control gain Shroud.

Quote from hawk1674

Ward of Protection 2W
Enchantment
All auras’ you control gain Shroud.

Tranquil Cantrip 3(W/G)(W/G)
Sorcery
Destroy all enchantments. Draw a card.

Ghostfire Ward 2R
Enchantment – Aura
~ is colorless
Enchant Creature
Enchanted creature gets +1/+1 and is colorless
0: Return ~ to owner’s hand.

Quote from hawk1674

Ghostfire Ward 2R
Enchantment – Aura
~ is colorless
Enchant Creature
Enchanted creature gets +1/+1 and is colorless
0: Return ~ to owner’s hand.

I think you can safely give +2/+2 all things considered. Anyway:

Colorful War Banner 5
Artifact
Each creature gets +1/+1 for each other creature that shares a color with it.

Magus of the Blue Moon U
Creature- Human Wizard
All creatures and spells are colorless.
0/1