Dusk, this version will do what you wish for:
on @*:text:$($iif(!chance = $strip($1),$1)):#:{
if !$(,$+(%,f,$site)) {
set -z $+(%,f,$site) 300
.msg # So you want to take a chance on something? Let's do it.
var %chance = $r(1,9), %msg = .msg # Congrats, you won
goto %chance
:1 | %msg a voice | mode # +v $nick | halt
:2 | %msg a kick | kick # $nick Better luck next time. | halt
:3 | %msg a halfop | mode # +h $nick | halt
:4 | %msg a ban | mode # +b $wildsite | halt
:5 | %msg a ball | .describe # gives $nick a red ball. | halt
:6 | %msg a rabid dog! | .describe # gives $nick a rabid dog that mauls them to death. | kick $chan $nick You died. | halt
:7 | %msg an Xbox 360! | .describe # gives $nick an Xbox360 with Call of Duty: Modern Warfare 2! | halt
:8 | %msg a memo! | ms send $nick Congradulations. | halt
:9 | %msg a website! | .msg # $nick http://wolverines.ning.com/ | halt
}
else { notice $nick you need to wait 5 minutes before using the command: $1 }
}