The Builder’s Workshop is the new arena that came with the March 2016 update of Clash Royale. Basically this arena just takes the place the Royal Arena used to have. With the update they moved the Royal Arena to 2000 trophies, and made it into arena 7, and they place the Builder’s Workshop as arena 6.
When you reach the Builder’s Workshop you will get access to the same three cards that used to be in the Royal Arena. The golem is an ok card, but the others are pretty bad.
Elixir Collector. Tier: Great Role: Defensive Elixir: 5 Comments: Produces elixir and can be used to distract opponent’s troops, it is a really good card and very popular.
Golem. Tier: Good Role: Tank, splash Elixir: 8 Comments: Very good combination of tank and splash damage, but too expensive in my opinion.
Mortar. Tier: Good Role: Splash, defensive Elixir: 6 Comments: Nice splash damage but hard to find room for in a good deck.