diff --git a/stress/basher.py b/stress/basher.py
new file mode 100644
index 0000000..b6fcfca
--- /dev/null
+++ b/stress/basher.py
@@ -0,0 +1,41 @@
+# Copyright 2011 Quanta Research Cambridge, Inc.
+#
+#    Licensed under the Apache License, Version 2.0 (the "License");
+#    you may not use this file except in compliance with the License.
+#    You may obtain a copy of the License at
+#
+#        http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS,
+#    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#    See the License for the specific language governing permissions and
+#    limitations under the License.
+"""Class to describe actions to be included in a stress test."""
+
+
+class BasherAction(object):
+    """
+    Used to describe each action that you would like to include in a test run.
+    """
+
+    def __init__(self, test_case, probability, pargs=[], kargs={}):
+        """
+        `test_case`  : the name of the class that implements the action
+        `pargs`      : positional arguments to the constructor of `test_case`
+        `kargs`      : keyword arguments to the constructor of `test_case`
+        `probability`: frequency that each action
+        """
+        self.test_case = test_case
+        self.pargs = pargs
+        self.kargs = kargs
+        self.probability = probability
+
+    def invoke(self, manager, state):
+        """
+        Calls the `run` method of the `test_case`.
+        """
+        return self.test_case.run(manager, state, *self.pargs, **self.kargs)
+
+    def __str__(self):
+        return self.test_case.__class__.__name__