[New Card 3]

[watermonster]

Name: Failed Experiment
Casting Cost: 4
Card Type: Shadow Ability - attach to enemy ally
Effect: Enemy must use 2 resource at the start of each turn to keep targeted ally alive.
Flavor Text: Don't cross the line.

[Fiend]

Name: Devil's Pet
Card type: Shadow Ally
Casting Cost: 4
Stats: 4/2
Effect: When Caniboarl is attacked and dies, Caniboarl still defends.
Flavour text: What the?...

EDIT: Realised my CARNIBOARL resembled AnAdolt's CARNIBOAR a bit too much. XD Change of name, added a buff.

[Ice]

Name: Parasitic Horror
Cost: 2
Type: Shadow Ally
Effect: Both heroes are dealt 1 damage at the start of your turn.
Stats: 2 attack, 3 health
Flavor: "At least someone eats my cooking."

[Cryminysakes]

HellHog
Shadow Ally
Cost (5)
Stats: 2/8
Effect: The first hero or ally to attack or use an ability that causes damage on each players turn must target this ally if possible.
Flavor: My God, that thing is hideous!! Hurry kill it!

[Scion]

Name: Nasty Boar
Casting Cost: 5
Card Type: Shadow Ally
Effect: When this card is put into play, if your opponent has more allies in play than you return one of his allies to the top of his deck.
Stats: 2/4
Flavor Text: "Aldon the Brave: What a horrible smell, it forces you to retreat"

A controlish creature with a pumped up health that can stay alive for a turn, while with it's effect if you are fighting for board control you can turn the tides. So instead of plasma behemoth or chimera you would drop him till you get a better grasp of the board.

[Lioncourt]

Name: Turn Shadow
Casting Cost: 2
Card Type: Shadow Ability
Effect: Target ally you control has +4 attack. At the end of your turn, sacrifice it.
Flavor Text: "Welcome to your new... unlife."

[Martin JF]

Name: Death Pact
Casting Cost: 2
Card Type: Neutral Ability [attached to ally card]
Effect: Ongoing: Target ally gains +2 attack and suffers 2 damage per turn
Stats: N/A
Flavor Text: "Life for power; the payment is fair"

We have not seen cards that will give strength at the expense of life. This card will give benefit to attack but will kill your ally slowly/quickly. Or you can use it to kill off annoying enemy ally, but at the expense of it getting stronger before death.

Err, I don't know if you noticed, but this is almost identical to my suggestion. Only difference is when the damage occurs and who can use it...

[Oppressed]

Name: Hellboar (Is it really anything but this?)
Casting Cost: 2
Card Type: Shadow Ally
Effect: When this ally is killed it is sent to your resources instead of graveyard.
Stats: Attack: 1 Health: 1
Flavor Text: A true abomination of nature.

Basically enough with the resource destruction, lets add some complexity to the game through resource acceleration. Do I want to attack this monster and up my opponents tempo or leave it alone and have it eat away at my hero and allies?

[Benjee007]

Name: Shadowboar
Type: Shadow Ally
Stats: 3/6
Cost:5
Ability: (2) Cannibalize: Destroy target friendly ally, Shadowboar goes back to its full health.
Flavour: ''QUEEEEK!''

[Sliptie]

Name: Jaw Bone
Casting Cost: 5
Type: Shadow Ally
Stats: 6/1
Ability: Can not be targeted by abilities or effects
Flavor Text: It's all teeth!