try this
local combat = createCombatObject()
setCombatParam(combat, COMBAT_PARAM_TYPE, 0)
setCombatParam(combat, COMBAT_PARAM_EFFECT, CONST_ME_POFF)
setCombatParam(combat, COMBAT_PARAM_TYPE, CONDITION_PARALYZE)
setAttackFormula(combat, COMBAT_FORMULA_LEVELMAGIC, 0, 0, 0, 0) -- POFF hits...