diff --git a/anki/consts.py b/anki/consts.py
index 666c60b41..1b7da7640 100644
--- a/anki/consts.py
+++ b/anki/consts.py
@@ -29,6 +29,12 @@ MEDIA_REM = 1
 # dynamic deck order
 DYN_OLDEST = 0
 DYN_RANDOM = 1
+DYN_SMALLINT = 2
+DYN_BIGINT = 3
+DYN_LAPSES = 4
+DYN_FAILED = 5
+DYN_ADDED = 6
+DYN_DUE = 7
 
 # deck schema & syncing vars
 SCHEMA_VERSION = 3
@@ -66,9 +72,14 @@ def alignmentLabels():
         2: _("Right"),
         }
 
-# todo: expand
 def dynOrderLabels():
     return {
         0: _("Oldest seen first"),
         1: _("Random"),
+        2: _("Increasing intervals"),
+        3: _("Decreasing intervals"),
+        4: _("Most lapses"),
+        5: _("Failed today"),
+        6: _("Order added"),
+        7: _("Order due"),
         }
diff --git a/anki/decks.py b/anki/decks.py
index 9ff004ca2..7b96f6bd6 100644
--- a/anki/decks.py
+++ b/anki/decks.py
@@ -136,7 +136,6 @@ class DeckManager(object):
         if not str(did) in self.decks:
             return
         deck = self.get(did)
-        print "fixme: add dyn to old decks"
         if deck['dyn']:
             # deleting a cramming deck returns cards to their previous deck
             # rather than deleting the cards
diff --git a/anki/sched.py b/anki/sched.py
index 3fc50c4b7..21642fe9e 100644
--- a/anki/sched.py
+++ b/anki/sched.py
@@ -728,10 +728,15 @@ did = ? and queue = 2 and due <= ? limit ?""",
         did = did or self.col.decks.selected()
         deck = self.col.decks.get(did)
         assert deck['dyn']
+        # move any existing cards back first
+        self.remDyn(did)
         # gather card ids and sort
         order = self._dynOrder(deck)
         limit = " limit %d" % deck['limit']
-        ids = self.col.findCards(deck['search'], order=order+limit)
+        try:
+            ids = self.col.findCards(deck['search'], order=order+limit)
+        except:
+            ids = []
         # move the cards over
         self._moveToDyn(did, ids)
         # and change to our new deck
@@ -748,16 +753,20 @@ usn = ?, mod = ? where did = ?""", self.col.usn(), intTime(), did)
             return "order by c.mod"
         elif o == DYN_RANDOM:
             return "order by random()"
-        # elif o == "added":
-        #     return "order by n.id"
-        # elif o == "random":
-        #     return ""
-        # elif o == "relative":
-        #     pass
-        # elif o == "lapses":
-        #     return "order by lapses desc"
-        # elif o == "failed":
-        #     pass
+        elif o == DYN_SMALLINT:
+            return "order by ivl"
+        elif o == DYN_BIGINT:
+            return "order by ivl desc"
+        elif o == DYN_LAPSES:
+            return "order by lapses desc"
+        elif o == DYN_FAILED:
+            return """
+and c.id in (select cid from revlog where ease = 1 and time > %d)
+order by c.mod""" % ((self.dayCutoff-86400)*1000)
+        elif o == DYN_ADDED:
+            return "order by n.id"
+        elif o == DYN_DUE:
+            return "order by c.due"
 
     def _moveToDyn(self, did, ids):
         deck = self.col.decks.get(did)