We want moltres.

LFOs are probably not the best tool to make your basses talk. A more suitable approach would be to automate it manually instead of with an envolope, or an LFO. That being said, http://www.vst4free.com/index.php?plug-ins=Filtering
Find one that works for you.

When going for "Emotional drops" I usually use some major arps, a airy pad, energetic percussion, and some background noise to make it feel full. I can't hear the specific song your talking about, but i'm imagining Cracks, and other flux pavilion sounding stuff. If you're looking on how to make ...