I'm new here and have never used this bot before. But a few days ago I tried it and I liked it :)
I wanted to use silverfish, but, unfortunately, I saw this inscription: silverfish is outdated, not support Knight of the Frozen Throne & Kobolds and Catacombs expansions!
But there is also another Silverfish, that supports all of this and more...(21 feb 2018) :)
You can get it here or here.
As usual, your results will depend on the correct muligan (file _mulligan.txt) and the correct settings (file setting.txt) that fit your deck.
Good luck in boting.
How to use it (as well as the previous Silverfish):
1) Unzip all files in HearthRanger\ExternBot\silverfish\
2) Run bot -> Bot control option -> check Use extern A.I. module -> select silver.dll -> press Save button.
3) Done.
Those who used the Silverfish before can use their settings - they need to be transferred from the old settings.txt file (or specific to the classes) to the new _settings.txt file
For a simple and quick mulligan creation (_mulligan.txt) you can use the Visual Mulligan Editor.