Hi I have a question if someone can write a script to Summon Rune consists of

It uses Rune eg id 2100 which gives us a command! Summon 

through which we invoke a monster that does not attack us. Attacks only selected persons / Creatures 

When we use this rune get this command on a rune disappears forever. 

Summon must follow own or be owned teleport when far gone

Try this..
summonrune.lua (data/actions/scripts):

function onUse(cid, item, position, fromPosition)
	summon = "Fire Elemental"
	msg = "Summon!!"
	doConvinceCreature(cid, doSummonCreature(summon, getPlayerPosition(cid)))
	doSendMagicEffect(getCreaturePosition(cid), CONST_ME_MAGIC_RED)
	doCreatureSay(cid, msg, TALKTYPE_ORANGE_1)
	doRemoveItem(item.uid)
end

Add the tag on actions.xml (data/actions):

<action actionid="2100" event="script" value="summonrune.lua"/>

No, no, it's not such a thing in terms 

you use the rune and get a command! summon that recalls Demon Monsters eg 1 rb 10 rb Dragon, etc.