That creature is very dead, and you did it for only two mana
This may be a little bit of an overreaction to Golgari Charm, and I know that I have been advocating this in the past
The loss of Dockside Extortionist does mean that it lost its best target of all time, though
Your Basilisk Gate sees more Gates and consequently creates an enormous temporary buff for a target creature, for example
Youre going to be paying around 3 mana and having to cycle two whole cards just to kill most early threats
In Sultai colors, you can do some nasty things with this, from using Buried Alive/Entomb early on to setup a great later turn, to just replaying the Maha, Its Feathers Night and Toxrill, the Corrosive that your opponents worked so so hard to get rid of