Help me improve my dumb combo idea?

I like the Trilobite creature type, I like Trilobites and I think it's funny that they put them on cards. Unfortunately there aren't nearly enough to make a deck out of and they don't do anything synergistic as a tribe... but I was thinking about what I could do with them anyway.

So, looking at [[Cryptic Trilobite]] and [[Scuttling Sliver]] I thought "there's gotta be something we can do with this." We just need a way to make Cryptic Trilobite a Sliver like [[Arcane Adaptation]] or [[Maskwood Nexus]] and a way to reduce ability costs like [[Training Grounds]]. Then it's infinite tap/untap! ...but that's basically a really expensive and unnecessary way to do the [[Horseshoe Crab]] combo, and there's no actual payoff without another card that gives you some other benefit from doing this.

Any ideas to make this actually useful?