Dec 12 gameplay update: Yoshika rework, balance update

Fixed performance issue caused by special effects


Cost 14→16
Movement speed3.2→3.4
Attack 7→8
Health of zombies revived by Infection 20%→24%

First spellcard reworked:
Cost4→3
Now anyone bitten by Yoshika will be infected and will never be cured.

[Second Spellcard: Biotoxin
Cost3→4
Enemies infected by Yoshika will also be turned into zombies with 16% health
Fixed a bug that the viral cloud will deal damage to flying units


Attack start-up is now 50% faster
Speed spellcard
Fixed a bug that the singing will deal damage to enemies.
Cost1→2
Slow Spellcard
Fixed a bug that the spellcard has no actual effect


Blind Spellcard: chance of Blinding 75% -> 70%


Attack speed 1.85/s→2.1/s


Mirror Spellcard cost 5→7