diff --git a/light9/Effects.py b/light9/Effects.py
new file mode 100644
--- /dev/null
+++ b/light9/Effects.py
@@ -0,0 +1,24 @@
+import random
+import light9.Submaster as Submaster
+from chase import chase as chase_logic
+
+thirds = 'third-l', 'third-c', 'third-r'
+thirds_bounce = 'third-l', 'third-c', 'third-r', 'third-c'
+backs = ['back%d' % d for d in range(1, 11)]
+rand_flutter = ['scoop-l', 'scoop-c', 'scoop-r', 'down-c', 'down-l', 'down-r', 'cyc', 'zip_blue', 'zip_red', 'zip_green', 'zip_orange'] + backs
+rand_flutter *= 10
+random.shuffle(rand_flutter)
+
+# don't forget to update this!
+__all__ = ['chase', 'thirds', 'thirds_bounce', 'rand_flutter', 'backs']
+
+def chase(t, ontime=0.5, offset=0.2, onval=1.0, 
+          offval=0.0, names=None, combiner=max):
+    """names is list of sub or channel names"""
+    sub_vals = {}
+    chase_vals = chase_logic(t, ontime, offset, onval, offval, names, combiner)
+    for name, value in chase_vals.items():
+        sub = Submaster.get_sub_by_name(name)
+        sub_vals[sub] = value
+
+    return Submaster.combine_subdict(sub_vals)