Forum:Spirit reaper vs elemental hero great tornado

i was playing with a friend of mine and i had a face-up defence position spirit reaper. then he fusion summoned great tornado, halving all my face-up monsters attack. he said that spirit reaper was also destroyed because great tornado targets, but i told him that great tornado doesn't target. he "randomly" halves all my monsters attack. i want to know if great tornado targets my monsters causing spirit reaper to be destroyed