Skill Ideas:
Dragonbane
Poison the target Dragon for three damage points.
Time Rift
Revert the target creature to its original stats. Can only target your own creatures.
Burden
The target creature's skill cost is doubled.
Turbulence
The target Airborne creature's skill is changed to "Turbulence : Gain -1|+1 per turn. Attack can drop below zero."
Burn
The target creature's skill is changed to "Blazing : Generate
each turn" and it is poisoned.
Necromancy
While this card is in play, all creatures with Undead gain +1|+X. X is the number of creatures with Undead or Necromancy that you own. Does not stack.
Choke
Your opponent can not generate quanta or heal for one turn. Does not stack.
Rebirth
All creatures lose any status effects. (Poison, Aflatoxin, Adrenaline, Immortality, Gravity Pull, Momentum, etc.)
Assimilation
Play the card that has been played the most during this match. If there is more than one most-played card, it is randomly chosen from all cards that have been played.
Mob
Add one extra row of creature slots. This card can only be played if your creature slots are full.
Saboteur
The target creature gains the skill "Saboteur - Delay one random permanent per turn."
Passive-Aggressive (I know that this isn't even close to the actual definition of the term. Bear with me.)
If the target creature or permanent has a passive skill, it gains a random active skill. If it has an active skill, it gains a random passive skill. If it has no skills, it gains a random passive and active skill.