Advanced Event Help Options

[atlus]

I have a bunch of events I want to know how to do for rpgmaker 2000. They include: A time sword system where if you equip A sword called the time sword on the field or in battle my main character I'm working will become an older version of himself with increased stats a new degree and different skills(similar to the legend of Zelda ocarina of time) but if you unequipped the sword he will become his younger self again,a MP system where instead of using MP to cast spells you have to wait a certain amount of turns to cast spells depending on how weak the spell is, a system where status effects are contagious and spread to other members of the party or heck even other monsters, a system where Depending on which weapon you have equipped, your stats will grow in a different way as you win battles with your weapon, and a system where Depending on which weapon type you have equipped your character will learn a skill. Winning battles with that weapon type will cause you to learn more skills with that weapon type that can only be accessed when that weapon type is equipped. There... That's most of what I want to know... I know it's a lot so take your time figuring this stuff out and soon I will have one heck of a game! P.S Cant give details of game since I'm working on story and title so don't ask about it.)