>>363664503 layers of spikes deal 25% damage not taking resistances into account iirc but flying types and pokemon with levitate are immune and it takes 3 whole turns to set up, meanwhile nobody is safe from sneaky pebbles, which only takes a turn to setup and removes half hp if the pokemon is quad weak to rock (most notably Charizard and Volcarona).
tl;dr Yes it's retarded
