Revert "fixes #925"

This reverts commit 5660c2922a

src/server/config/effects/effectFrenzy.js

@@ -1,15 +1,10 @@
 module.exports = {
 	type: 'frenzy',
-
 	newCd: 0,
-	chance: 0,
 
 	events: {
 		beforeSetSpellCooldown: function (msg, spell) {
-			if (!spell.auto || !spell.isAttack)
-				return;
-
-			if (Math.random() * 100 >= this.chance)
+			if (!spell.auto)
 				return;
 
 			msg.cd = this.newCd;

src/server/config/spells/spellFlurry.js

@@ -35,7 +35,6 @@ module.exports = {
 		this.obj.effects.addEffect({
 			type: 'frenzy',
 			ttl: this.duration,
-			chance: this.chance,
 			newCd: 1
 		});
 	}

src/server/config/spellsConfig.js

@@ -119,8 +119,7 @@ let spells = {
 		castTimeMax: 0,
 		manaCost: 12,
 		random: {
-			i_duration: [10, 20],
-			i_chance: [20, 50]
+			i_duration: [4, 9]
 		}
 	},
 	smokebomb: {