Ekans

No. 23Poison

How to get one

The best chance per place. The same table can do better at another hour; the tool gives them all.

Place	Method	Level	Per attempt
Route 11	Grass	12–15	2.36%
Route 4	Grass	6–12	1.95%
Route 10	Grass	11–17	1.46%
Route 9	Grass	11–17	1.46%
Route 8	Grass	17–19	1.19%
Route 23	Grass	26	0.78%

Place	Method	Level	Per attempt
Route 32	Grass morning	4	2.93%
Route 33	Grass morning	7	2.93%
Route 3	Grass morning	8	1.95%
Route 4	Grass morning	8	1.95%

Place	Method	Level	Per attempt
Route 32	Grass morning	4	2.93%
Route 42	Grass morning	13	2.93%
Route 3	Grass morning	8	1.95%
Route 4	Grass morning	8	1.95%
Route 33	Grass morning	7	0.49%

It also comes out of headbutt trees.

Generation 2 split Special in two, and not down the middle: the two columns are not one value copied twice.