Spell Demo+Help: Better town portal

Here is a demo of my new town portal spell. It is much cooler than the current town portal because it actually makes a portal for you and than sends you to town where there is a portal there too. than the portals disapear after being used. when u start pick up the town portal next to you and just use it. Fell free to take my spell if you like it just be sure to give credit where credit is due. Remember Supra God CrK made that spell. thanx for your cooperation.

now here is the part where i need help.

ok i just made my first ever trigger enhanced spell. i am very very new to spell making. maybe been making them for about 2 weeks most. that is also how long i have been making maps so you can tell i am new. What i want this spell to be able to do is send you to town. than not get rid of the portal that is in town and when you go back to it send you back to the location you were at before. just like town portal from diablo. if you can figure this out please do it and attach it back to my map and repost the map. or just walk me through it. thanx for all the help. if i need to clear this up any just ask. its for my up and coming diablo 2 hero arena... mine will blowaway the current one which is crappy.

Crap here is the stupid map....sorry i knew i would forget to attach it. i'm so dumb.

done :D
also i removed the stomp effect

Just a query -
How are you going to do spells? D-II had like 30 spells / character.
WC3 just has 3+3+3+1 spells / character with only 4 active per time. How do you plan to implement it? (Throw away the spells, only selected spells?) (I've not seen the current crappy one)

i plan to make skills go up to level 20 and have 5 selected skills from the various 30+ and i will choose the best 5....BUT (here comes the good part) i will have different versions of characters. for example a bow zon and a java zon. they won't be mix and match like d2 but u can have a bow or a java zon. same for sorcs ect. it will be good.

Ok, best of luck for D2 arena...
Ideas?
Assasin-
You could base assasin traps off Statis Traps Wards and make it launch chainlightnings or shockware (wakeoffire)
Necro - Curses:
Curse = fairy fire (reduced armor = xtra damage)
Decrepify = Cripple
etc... Do shout out if you need ideas about how to spellify D2 stuff.