You will need:
WoW, O'rly?
WPE Pro (Winsock Packet Editor (WPE) Pro)
Perm Edit (DOWNLOAD)
A Calculator.
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Start up WoW, then WPE.
Open up Perm Edit and target WoW, give full permissions.
Have Thottbot, Wowhead, Allakhazam or anyother WoW Database you use open.
Go back in to WoW and use a buff. Instant casts work best.
Example: Blessing of Wisdom, Arcane Intellect.
Now jump back to Thottbot or whatever your using, type in the spell you just used, make sure you have the right rank!
Look at the url and find the spell ID.
Example: http://wow.allakhazam.com/db/spell.html?wspell=10157
Now Open your calculator, click "View" and go to Scientific Mode.
Click on Dec and type in your number, then press Hex you should get a four didgit number.
Go to WPE and make a new Filter, name it and in the row of Search look for Collum 07 and 08 put in the Hex Code you got in the two.
Example: My code is say 457F I would put the 45 under 07 and the 7F under 08.
Head back to Thottbot and find a spell you want to replace it with, I think Polymorph is a fun spell to mess around with.
Repeat the Calculator steps but with the ID from your new spell.
Do the same process but with the new Four-Didgit number.
Row 07 & 08. But this time put them in Modify. Click Apply after your finished tic the box beside your filter name.
Go in game and cast your buff on another player.
So if I changed Arcane Intellect into Polymorph, I would instant cast Polymorph and the target would be thinking: WTF!
This does work on NPCs but they will attack you.
Try changing a buff to an attack like, Blessing of Sanctuary to Fireball, last time that idiot Buys-out your epic mace.
Some tricks for this lil' exploit:
Try manipulating your Polymorph switch, like a super heal. 1000hp a second on party members.
Ever wanna Instant Cast Blizzard or Rain of Fire, try it on a friend. xD
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Side Notes:
Its better to make a macro for each switch you make, cause when you cast your switched speed it bugs it and you have to press Esc to de-big it.
Make a macor like this:
/cast Arcane Intellect(Rank 5)
/stopcasting
Then it makes the process alot faster.
This does not work on Live Servers. Sorry.
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WARNING: You can get banned for this, so use it on friend and people that know your doing this. Try making an alt account and have some fun, for safety.
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~Alpine