If you're gonna make one yourself, I suggest you get RSBot and script one for that.
Make a GUI with Phrase 1, Phrase 2, Phrase 3, Phrase 4 & Phrase 5 and Delay, let them ignore Phrase 2, Phrase 3, Phrase 4 & Phrase 5 if blank. Let the script then spam the Phrases that weren't left blank with the delay in between.
I'ma suggest this on RSBot anytime soon if you don't know how to ;p