Is the ability only usable once?
On the first turn you pay the Casting Cost [5|4
] for a 2|2 (that skill better be worth the 3 quanta extra cost)
On the second turn you finish the second payment (Casting Cost + Skill Cost = 5|4+2=7|6
). In return you get a creature that is worse than a 3.5|4 or 5|6.
I would not pay 7|6
for a 4|4 / 5|6 I would expect at least a 7|4. Then you have to account the "poison" that this creature acts like (average damage = half the attack to you per turn)
The Vampire skill is worth +1 cost and heals the user equal to the damage dealt
The Vvarg drawback cuts the relevant attack in half and then deals damage to the user equal to the new damage.
To calculate the balanced cost for this and other Vvarg creatures I would use the following equation:
Attack/2 + HP value -1 (Vvarg) + Skill value. (Note the Attack/2 is only true for Vvarg creatures. Normally it is Attack)
HP value
HP:value
0:-1
1-5:0
6-7:1
8-9:2
10+:3
So for 7|6 entropy I would expect a
: +12|+4 or +10|+6 or +8/+8