If you cast one Repeated Reverberation after another, you’ll copy the second Repeated Reverberation twice. Each resolves, creating three delayed triggered abilities. The next spell you cast or loyalty ability you activate after that will be copied six times. If that spell is also a Repeated Reverberation, the following spell or ability will be copied fourteen times. A fourth Repeated Reverberation will copy the next spell or ability thirty times. Reverberations repeated beyond that shall be left as an exercise for the reader.