XAS ( Xiderowg Action System)
Version: 3.2
Author: Xiderowg
Introduction The system allows you to create games like Zelda, Secret of Mana, etc…
The possibilities are infinite. It is possible to create, items as bombs, arc and
arrows, magic, items, swords, boomerang, shield or any item that you can imagine!
Note: The latest version of the script is currently written in Portugese, a translation is underway (see FAQ)
Features -> Final Attack System
-> Counter System
-> Advanced Status System.(+ 20 New States)
( Reflect / Re-life / Invicible / DeathCount / FAST
Slow / Stop / Confuse / Seal / Regen / Poison /
Sleep / Poison SP / Etc...)
-> Advanced Damage System.
( Drain HP-SP / Damage SP / Level Damage/ Gold Damage/
Rang Effect / Steal / Fixed Damage / Etc... )
-> Shield System.
-> Enemy Attack Effects.
( Drain HP-SP / Add States / Blow Power )
-> Advanced Item Effects(Field).
-> Collapse Zoom System.
-> Hit Effect system.
-> Advanced Enemy Action System.
(EXP-> shoot(X) / rand_shoot(X,X,X,X,X) )
(+ 40 New Commands to customize your enemys)
(Action based on HP/LV/Switch/Percentage ,Random Attack,
Escape, Reaction , auto states, etc...)
-> Multiple Treasure System. (0..5)
-> Auto Animation Command.
-> Damage Limit.
-> Custom speed moviment. (0..10)
-> Improved Collapse Animation.
-> Improved Multhits System.
-> Improved Charge System.
Script See download.
Compatibility I have no idea.
Screenshot 
..That pretty much sums it up.
DEMO http://atelier-rgss.com/RGSS/Battle/XAS_00a.html You can download it and find a bunch of instructions here.
Installation There's a lot of different scripts working together. You'd probably be better off starting your project from the demo.
FAQWhen will 3.2 be in english?I believe that a translation is underway, according to this thread;
http://www.rmxp.org/forums/index.php?topic=36855.420CreditsXiderowg, obviously. Not me. You can check out
http://atelier-rgss.com/Index.html for more cool XP/VX scripts.