>>55643536I've done it twice. There's a guide you can find that explains how to throw bait and balls in the best possible way. If you do that, you have a roughly 1 in 5 chance to catch Chansey every time you see one. (It's actually a bit less). Using the repel trick with a level 26 mon in area 2, you can raise Chansey's rate to 4 in 65. There's a 1 in 20 chance that the caught Chansey will have a lucky egg. That means you can expect to see 1625 wild mons before you get the lucky egg.