We could do some meta programming here.  

First off, create a `let(:gambits)` line with the appropriate content.  Maybe it should just be `subject.load_gambits`?

Then this test loop could be:

    gambits.each do |gambit|
      expect(my_plays).to include(gambit)
    end

Change the load_gambits code (modify some of the strings) and make sure this new test fails correctly.