Queria saber como cria uma terceira promotion e coloca para vender essa promotion em um NPC, ou então so como colocar aquela EPIC Promotion para valer.

Subistitua seu script do promotion.lua por esse aqui : 

local keywordHandler = KeywordHandler:new()
local npcHandler = NpcHandler:new(keywordHandler)
NpcSystem.parseParameters(npcHandler)

function onCreatureAppear(cid)			npcHandler:onCreatureAppear(cid)			end
function onCreatureDisappear(cid)		npcHandler:onCreatureDisappear(cid)			end
function onCreatureSay(cid, type, msg)		npcHandler:onCreatureSay(cid, type, msg)		end
function onThink()				npcHandler:onThink()					end

local node1 = keywordHandler:addKeyword({'promot'}, StdModule.say, {npcHandler = npcHandler, onlyFocus = true, text = 'I can promote you for 20000 gold coins. Do you want me to promote you?'})
	node1:addChildKeyword({'yes'}, StdModule.promotePlayer, {npcHandler = npcHandler, cost = 20000, level = 20, premium = true, promotion = 1, text = 'Congratulations! You are now promoted.'})
	node1:addChildKeyword({'no'}, StdModule.say, {npcHandler = npcHandler, onlyFocus = true, text = 'Alright then, come back when you are ready.', reset = true})

local node2 = keywordHandler:addKeyword({'epic'}, StdModule.say, {npcHandler = npcHandler, onlyFocus = true, text = 'I can epicize you for 200000 gold coins. Do you want me to epicize you?'})
	node2:addChildKeyword({'yes'}, StdModule.promotePlayer, {npcHandler = npcHandler, cost = 200000, level = 120, promotion = 2, text = 'Congratulations! You are now epicized.'})
	node2:addChildKeyword({'no'}, StdModule.say, {npcHandler = npcHandler, onlyFocus = true, text = 'Alright then, come back when you are ready.', reset = true})


npcHandler:addModule(FocusModule:new())

 

Essa Script fará o que ?

Você fala "epic" para o NPC e ele venderá a outra promotion.

Você pode alterar o custo e level minimo para que o NPC venda a promotion para o player... só alterar aqui :

cost = 200000  --(200k) para comprar.

level = 120 -- Level 120 para comprar.

Mais caso eu queira colocar para comprar a promotion em outro NPC ? Como Ficaria?