Well obviously, it would be.......The Banjo Minnow!!

Bluegill Flash Keitech swimbait on a 3/16 oz Half Moon Head.

Probably a Fat Albert in a smoke color with silver flakes on a 1/8oz strike king football shakey head. Put me anywhere in the country, at any time of year, with any water clarity, for any of the 3 black bass, and I can probably catch some on that.

1/4 oz. T-rig + Rage Craw 

I believe I'm remaining consistent when I say a traditional floating Rapala in chrome or chartreuse.  It doesn't alway catch the largest or the most fish in the lake but you can almost bank on it catching something.

A 5" GYCB senko in watermelon creme. Versatile bait that can be t-rigged, rigged wacky, or shortened for a drop shot or ned rig application. Can also use with a high speed retrieve to mimic a soft jerk bait. It flat out catches fish for me rigged wacky, yet if push came to shove I could cover a significant portion of the water column. 

Mepps Aglia #3 with brown fur and a silver blade. Easily my best fish catcher.

Texas rigged 7" Yum Tequila Sunrise worm. Any day,any condition.

I'll go with a 4" curly tail grub in any color, as long as it's some variation of green, no brown, what about smoke? Dang, yes, a grub on an 1/8oz weedless jighead, but not like a shakeyhead, rather a ball head with wire weedguard.

Cadman's 7 gram arky jig head with living image fry chaser skirt and a 4" green pumpkin Yamamoto double tail grub.

1/2 oz chatterbait zman because you can jig it, burn it, and steady reterive. and thats the first bait i got when i was 4 1/2

4 inch black curly tail grub on simple round jighead. Pick a random weight head between 1/8oz and 3/8oz, and I'll make do.

Can be thrown on spinning or casting, will catch almost anything, almost anywhere.

Runner-up #1: in-line spinner, silver blade, undressed treble.

Runner-up #2: original floating rapala F09, silver/black-back

1/2 ounce white spinnerbait, big willow, small Colorado, chartreuse single tail grub trailer, and a red Gammy trailer hook.

 

If I could only fish with one lure I would choose a bucktail  jig since it's a great lure for both freshwater and saltwater  fish.

Dirty jigs 3/8 oz. tour level pitchin jig - magic craw swirl, with a Reaction Innovation kinkys beaver in magic craw swirl for a trailer.