looking for a squishy spaceship landing sound

Hi. I'm an effects dummy, but I think what I'm looking for is either a phaser or envelope filter... maybe a flanger or auto-wah or mooger or some such... I really don't know. I do know that a lot of the effects I listed above can be similar. Basically what I want is whatever effect is the most outrageously, funkily, bizarre. (yet musically usable) Ideally, something that won't completely rob the bottom end or has a blend knob to blend in some dry signal, but will make my bass sound all robotically squishy like a spaceship making an emergency landing after the crew takes too many psilocybin mushrooms. I prefer a peddle that I can set on the floor and step on. Lets say, high end of the price range is $200. Any suggestions?