While Damn is very good, its also a bit of a solution with no problem
Use any of the typical untap effects available like Thornbite Staff and any sacrifice outlet, or just copy Zealous Conscripts over and over for an infinite number of token copies, ETB triggers, and untaps for Kiki-Jiki
Emerald Dragon is a great example of how to give card advantage without drawing cards, though Id argue that white deserves it more and has the more playable version in Crystal Dragon
Persistent Petitioners is, Im surprised to report, a trap
Honorable Mention #2 (#12 Overall) - Cao Ren, Wei Commander Check out this awesome Hill Giant in Black with horsemanship, but you lose three life on arrival to the battlefield
So what will you find in a Pokeball tin