toxicroak / skuntank will be a tier 2 deak at the most.
Toxicroak:
60 damage and poison for only two energy (one energy if it has the tool attached) thats pretty decent if all you needed was to have skuntank on the field, but you also need to have your own stadium in place. I'm not saying it will be impossible, but to go to all that trouble to set up for 60 damage does not seem all that worth the effort. Plus people are now starting to run unown G and counter stadiums will make it even harder for this card to be good
7/10