v0.3.0c: refactored staff visual effects to be contained in wands.

src/com/shatteredpixel/shatteredpixeldungeon/items/wands/WandOfVenom.java

@@ -42,6 +42,15 @@ public class WandOfVenom extends Wand {
         new Poison().proc(staff, attacker, defender, damage);
     }
 
+    @Override
+    public void staffFx(MagesStaff.StaffParticle particle) {
+        particle.color( 0x8844FF ); particle.am = 0.6f;
+        particle.setLifespan(0.6f);
+        particle.acc.set(0, 40);
+        particle.setSize( 0f, 3f);
+        particle.shuffleXY(2f);
+    }
+
     @Override
     public String desc() {
         return