New Traits + Balancing.

Cascade: Random breaking of blocks around initial block.
Fracture: Random breaking of max. 9 blocks in direction.
Dark: Heals tool, but gives weak- and darkness.
Glimmer: Gives a chance of night vision effect.
Analysing: ++More EXP, less drops!

src/main/java/com/sosnitzka/ztic_addon/traits/TraitDark.java

@@ -0,0 +1,43 @@
+package com.sosnitzka.ztic_addon.traits;
+
+import net.minecraft.block.state.IBlockState;
+import net.minecraft.entity.EntityLivingBase;
+import net.minecraft.init.MobEffects;
+import net.minecraft.item.ItemStack;
+import net.minecraft.potion.PotionEffect;
+import net.minecraft.util.math.BlockPos;
+import net.minecraft.util.text.TextFormatting;
+import net.minecraft.world.World;
+import net.minecraftforge.common.MinecraftForge;
+import slimeknights.tconstruct.library.traits.AbstractTrait;
+import slimeknights.tconstruct.library.utils.ToolHelper;
+
+/**
+ * Created by Robert on 03.06.2016.
+ */
+public class TraitDark extends AbstractTrait {
+
+    public TraitDark() {
+        super("dark", TextFormatting.DARK_GRAY);
+        MinecraftForge.EVENT_BUS.register(this);
+    }
+
+    @Override
+    public void afterBlockBreak(ItemStack tool, World world, IBlockState state, BlockPos pos, EntityLivingBase player, boolean wasEffective) {
+        if (random.nextFloat() <= 0.1) {
+            player.addPotionEffect(new PotionEffect(MobEffects.BLINDNESS, 300));
+            player.addPotionEffect(new PotionEffect(MobEffects.WEAKNESS, 300));
+            ToolHelper.healTool(tool, random.nextInt(51) + 10, null);
+        }
+    }
+
+
+    @Override
+    public void afterHit(ItemStack tool, EntityLivingBase player, EntityLivingBase target, float damage, boolean wasCritical, boolean wasHit) {
+        if (random.nextFloat() <= 0.1) {
+            player.addPotionEffect(new PotionEffect(MobEffects.BLINDNESS, 300));
+            player.addPotionEffect(new PotionEffect(MobEffects.WEAKNESS, 300));
+            ToolHelper.healTool(tool, random.nextInt(51) + 10, null);
+        }
+    }
+}