Help with some effects

[.Zurdok]

ive been playing guitar for like 3 years and ive never bought effects so i decided that it was time to buy some and i got $300
what i want to know is wich effect is this because i want to buy that effect

http://www.youtube.com/watch?v=_6LB0MQI4V4
the intro riff

and the 1rst and second solo of audioslave like a stone

thx

[son of gumby]

those guys really needed this pedal   

[Franky G-String]

ive been playing guitar for like 3 years and ive never bought effects so i decided that it was time to buy some and i got $300
what i want to know is wich effect is this because i want to buy that effect

http://www.youtube.com/watch?v=_6LB0MQI4V4
the intro riff

and the 1rst and second solo of audioslave like a stone

thx

You must be asking about ambiance like "reverb" or "delay"  Like A Stone is filled with both during the solos while Tom also uses a "whammy" pedal.