A substitution could possibly be troublesome if a move cannot effect a substitutor. I would like to know if moves such as dragon tail and whirlwind would still forceout a pokemon, despite it's substitution. Yhank:)
For this situation Whirlwind will still make the opponent switch out but not dragon tail because dragon tail deals damage so only the damage is applied.
Substitute now blocks the stat lowering effect of Defog, and Transform and Sky Drop will fail if used against a Pokémon behind a Substitute. The only status moves that target the user of Substitute that aren't blocked are: Attract, Curse, Destiny Bond, Disable, Encore, Foresight, Grudge, Guard Swap, Haze, Heart Swap, Imprison, Miracle Eye, Odor Sleuth, Perish Song, Psych Up, Roar, Role Play, Skill Swap, Spite, Taunt, Torment, Transform* and Whirlwind
-bulbapedia here
