So i was just doing my things , UNTIL i got this idea of a card:
BLUFF
-Turns: 8*
-Not stackable
-Effect: Hides half* of your current voodoo cards (Example: If someone uses crystal ball on me, and i have this card on effect, he will only see 1/2* of my deck)
-Duration: 24h*
This could be played as a defensive card, so it forces the players to be more prepared if they want to engage in a war.
The aspects with * should be reconsidered and debated.