Complex sentence: Effects-it is hard to see the effects Test Icicles use, but one picture shows an Electro Harmonix WORM modulation pedal, which is most likely responsible for the ring modulation effect in the song "Boa Vs. Python".
Split into simpler sentences: Effects-it is hard to see the effects Test Icicles use, but one picture shows an Electro Harmonix WORM modulation pedal. Probably responsible for the ring modulation effect in "Boa Vs. Python".