Sorcery-speed is the only downside, in my opinion
Play the usual TeraZard line, evolve to put 2 Fire on Active and 1 on a backup Mander, take some knockouts, then before the first TeraZard gets KO'd (or if you have other ways to keep 4 energy in play, which Zard/Pidgeot should be able to do), evolve to a MegaZard and take out any opposing megas by dealing 380 damage
Aura of Silence Taxation effects have a distinct weakness: They get weaker the longer the game goes on
Aragorn, King of Gondor Is it time for Aragorn, King of Gondor to replace Ruhan of the Fomori as commander of You Did This to Yourself
The second most broken thing you can do is cast a turn 1 Hypnotic Specter, which isnt actually a very good play in a lot of situations, as you are setting yourself up for a 2 for 1
this article covers what makes fake cards and counterfeit cards different, and what words I will use on this site to describe them