This is a relic deck. The idea is to play rat cage first and then lots of relics after. It's not very strong really, just because there is too much to counter it.
What if you don't draw rat cage? Well then you have to rely on Plan B, which is getting the unblockable rogue out and equipping them with a weapon.
Quick demonstration how it is supposed to go:
https://youtu.be/OLUjfmriU9o