Custom games dont have invisible champs

I'm some gold nub trying to learn how to play against those annoying invisible champs; Shaco, Leblanc, and Teemo come to mind, however they are unavailable to play in bot games currently. This is probably because level 1's (me) would get destroyed by these godawful champs so they took them out. The problem is that in ranked they exist and they annoy me even more because everyone says put a pink down for them. So the great obedient one that I am, I always carry a pink and when they decide to drop off the rift and go to Hogwarts for their invisible cloaks, I drop a pink and bam theres now two of them. So naturally I pick the one that runs the other way for Leblanc, the one that spawns to the right for Shaco, and Teemo has probably already killed me. The thing is good players mess with me and I need more practice. TL;DR PUT SHACO, LEBLANC, AND TEEMO IN CUSTOM GAMES