Spell that has a 50% to kill you and 50% to throw the spell

[DestinationSer]

Hi! I am wondering, how can I make a spell have 50% chance to kill you and a 50% to throw the spell when you cast it?
Heres the script

local time = 120 * 1000 -- 120 * 1000 = 2 min
local addShield = 200 -- how much shielding should be added
local addSword = 50 -- how much mana should be added


local wolf = {lookType = 54, lookHead = 0, lookBody = 0, lookLegs = 0, lookFeet = 0, lookTypeEx = 0, lookAddons = 0}
local combat = createCombatObject()
setCombatParam(combat, COMBAT_PARAM_EFFECT, CONST_ME_MAGIC_BLUE)
setCombatParam(combat, COMBAT_PARAM_AGGRESSIVE, 0)

local condition = createConditionObject(CONDITION_ATTRIBUTES)
setConditionParam(condition, CONDITION_PARAM_TICKS, time)
setConditionParam(condition, CONDITION_PARAM_SKILL_Shield, addShield)
setConditionParam(condition, CONDITION_PARAM_SKILL_SWORD, addSword)
setConditionParam(condition, CONDITION_PARAM_BUFF, TRUE)
setCombatCondition(combat, condition)

local speed = createConditionObject(CONDITION_HASTE)
setConditionParam(speed, CONDITION_PARAM_TICKS, time)
setConditionFormula(speed, 1.0, 996156, 1.0, 996156)
setCombatCondition(combat, speed)

local outfit = createConditionObject(CONDITION_OUTFIT)
setConditionParam(outfit, CONDITION_PARAM_TICKS, time)
addOutfitCondition(outfit, wolf)
setCombatCondition(combat, outfit)

local exhaust = createConditionObject(CONDITION_EXHAUST)
setConditionParam(exhaust, CONDITION_PARAM_SUBID, 0)
setConditionParam(exhaust, CONDITION_PARAM_TICKS, time)
setCombatCondition(combat, exhaust)

function onCastSpell(cid, var)
return doCombat(cid, combat, var)
end

 

[Redseb]

Try using math.random:

local time = 120 * 1000 -- 120 * 1000 = 2 min
local addShield = 200 -- how much shielding should be added
local addSword = 50 -- how much mana should be added


local wolf = {lookType = 54, lookHead = 0, lookBody = 0, lookLegs = 0, lookFeet = 0, lookTypeEx = 0, lookAddons = 0}
local combat = createCombatObject()
setCombatParam(combat, COMBAT_PARAM_EFFECT, CONST_ME_MAGIC_BLUE)
setCombatParam(combat, COMBAT_PARAM_AGGRESSIVE, 0)

local condition = createConditionObject(CONDITION_ATTRIBUTES)
setConditionParam(condition, CONDITION_PARAM_TICKS, time)
setConditionParam(condition, CONDITION_PARAM_SKILL_Shield, addShield)
setConditionParam(condition, CONDITION_PARAM_SKILL_SWORD, addSword)
setConditionParam(condition, CONDITION_PARAM_BUFF, TRUE)
setCombatCondition(combat, condition)

local speed = createConditionObject(CONDITION_HASTE)
setConditionParam(speed, CONDITION_PARAM_TICKS, time)
setConditionFormula(speed, 1.0, 996156, 1.0, 996156)
setCombatCondition(combat, speed)

local outfit = createConditionObject(CONDITION_OUTFIT)
setConditionParam(outfit, CONDITION_PARAM_TICKS, time)
addOutfitCondition(outfit, wolf)
setCombatCondition(combat, outfit)

local exhaust = createConditionObject(CONDITION_EXHAUST)
setConditionParam(exhaust, CONDITION_PARAM_SUBID, 0)
setConditionParam(exhaust, CONDITION_PARAM_TICKS, time)
setCombatCondition(combat, exhaust)

function onCastSpell(cid, var)
local chance = math.random(1,2)
if chance == 1 then
return doCombat(cid, combat, var)
else
return doCreatureAddHealth(cid, -getCreatureHealth(cid))
end