Yet another Unown G question.

[Mach]

If I use Slaking PL's Full Speed Dash with an Unown G attached to Slaking, does the effect of 50 damage added on activate? It says "Prevent all effects of attacks done to that pokemon", but it doesn't specify if that Pokemon's own attacks are included.

 

[PokePop]

Every player needs to be familiar with errata.
Here is the link to the errata section of the Compendium: http://compendium.pokegym.net/compendium-lvx.html#c3

Unown G has had an errata (correction) issued that it only prevents effects of opponent's attacks, not your own attacks.