Shine wall infinite

Thanks to shine's ludicrous hitstun, you can essentially waveshine an opponent against a wall in-place.

While the window to shine them again is generous, it requires consistent waveshine inputs and can only be performed on Pokémon Stadium when the stage in in a transformation, making this infinite somewhat hard to pull off in practice.

Many players also consider it unsportsmanlike or 'lame'. However, if executed perfectly, it can allow you to take a stock off of just one shine.

Shine itself is enough to do the infinite. However, if you really want to optimise this, moves with set knockback or none at all can be mixed in to deal damage faster. Namely, drill and laser. The former can be SDI (ASDI)'d, so be careful.