I heard it somewhere.
No, Sneargle can learn those Moves, though it's hard to obtain.
http://www.smogon.com/rs/pokemon/smeargle
Get Smeargle to Sketch your own Pokemon through double battles, Have it hold a focus sash, and, BAM! It can learn explosion, and self destruct
It can it's just hard. You have to have a Pokemon with damp so explosion/self-destruct fails and the poke you want to sketch from is not fainted. Then you have an explosion/self-destruct smeargle to use.
