you have on your on text event

on 1:TEXT:*!Rand*:$chan:{

few things wrong one you have it as a wildcard also you have $chan instead of #
maybe be do

on $*:TEXT:/^!Rand$/iS:#:{

then you hve the == numb. ie: 1.
you can fix that by taking out he . or by doing

Var %random = $+($r(1,15),.)

maybe add a flood pro to it as well
ie:

on $*:TEXT:/^!Rand$/iS:#:{
if (!%f) { inc -u5 %f 

you should also name your timers as someone my have a timer just called timer an it can over write it.
but yes another 8-ball variant type snippet. =/
eh whatever.....3/10