New Concept of Cards

[darkCROSSBOW]

There should be cards which are only effective against Humans or Shadows.
For example,

KARMA
3CC
human ability.
Only works against shadow.

You get the shadow ability card of your choice from The opposing shadow player's graveyard.

"YOUR KARMA WILL COME BACK AT YOU"

[Index]

Wording is not clear enough IMO. Is it a summon effect?

[Saf]

Faction cards are a good idea but what a hypocrite for your card idea It should be something human specific and unique to humans/drawing on human strengths

[darkCROSSBOW]

No there should also be cards (abilities mainly) that work against Human only!
For example,

FLESH ROT (5cc)
Shadow ability.

"all human allies of opposing hero, in field, are reduced to 1 health"

"IS IT PLAGUE? No its FLESH ROT!!!"

[QuantumNinja]

No there should also be cards (abilities mainly) that work against Human only!
For example,

FLESH ROT (5cc)
Shadow ability.

"all human allies of opposing hero, in field, are reduced to 1 health"

"IS IT PLAGUE? No its FLESH ROT!!!"

The problem with cards like this is that they become dead draws when your opponent doesn't belong to the proper faction. They might have limited use in Meltdown or tournaments with sideboards, but I don't think many people would run with them in general.

[Airact]

The problem with cards like this is that they become dead draws when your opponent doesn't belong to the proper faction. They might have limited use in Meltdown or tournaments with sideboards, but I don't think many people would run with them in general.

Sideboard cards are fine

[nMer]

The idea is fine (especially flavour-wise), and to prevent dead draws it could be applied like this:

Dimensional Shift
4cc Mage / Priest ability
All Shadow allies in play are shuffled into their owners' decks. All other allies in play take 1 arcane damage.

Shining Spear
5cc Warrior / Priest weapon
Attack 2, Durability 2
Shining Spear doesn't lose durability in combat with Shadow allies.

Also, why choose only one side of the conflict?

Barrier of Nature
4cc Hunter ability
Duration 1: Shadow allies and Shadow abilities cannot target Human allies. Human allies and Human abilities cannot target Shadow allies.