have you thought about Isochron Scepter , that with boomerang has always been an expletive to people.
Honestly I'm always looking for ways to use Isochron Scepter . There are two reasons I don't: 1. It's a very expensive card to go throwing around in every deck (I have a few decks with it in it). 2. It's counterproductive. If I cast Kederekt Leviathan , the scepter will be rendered useless til I get another spell for it. Plus, with the level of bounce I have in this deck, I don't really need a scepter to get things rolling. Thank you for the comment! I hope you like the deck!
+1. This deck seems like I would love playing it. I just don't like the K.Leviathan. I think it's counter-productive to the Chronozoa.
I know what you mean. Kederekt Leviathan seems rather counterproductive in most situations. If I cast him with a bunch of Chronozoa copies out, they would all go away. The Leviathan would also bounce Paradox Haze s and any other creatures I have out. Sometimes I don't even get enough lands out to cast him making him a dead drop. So why do I use him? I use him because he is a great fail-safe. If there is stuff on the field that I can't take care of (Hexproof or Shroud namely, though an overabundance of threats is another important concern) the Leviathan lets me cut through them all. Being left with a 5/5 is actually kinda nice. Plus I don't get Chronozoa going to often (my local group doesn't like him too much!)
You seem to have everything covered here, but no Unsummon ? Sideboard for creature heavy decks?
maybe try Barrin, Master Wizard /Altar of Dementia /Spawning Pit if you get to many Chronozoa summoning sickness tokens. try Powder Keg against token decks or decks with lots of cards with same cmc, do you play legacy or casual? if casual try Sol Ring , if legacy try to find similar but legal cards to speed you up
This comment is in response to DavidBray. Thanks for the comment first off! As for using Unsummon : Boomerang is much more useful here and ultimately creatures are never much of a threat (unless of course there are lots of creatures with shroud or hexproof). Also I play casually so I never sideboard for any of my decks.
This comment is in response to theonyc. Thank you for commenting! Those cards that you suggested for things to do with spare Chronozoa copies are all good, but not really needed. Firstly because I don't always get Chronozoa running. Secondly because they honestly don't fit with the way this deck works. As for Powder Keg , I rarely face token decks in my local group so I don't really need it. This segways into the casual/legacy thing. I play casual. So the the concern of banned or not banned cards has no sway over me (I do hold to another list of restrictions that I have formed though). Lastly I find that this deck doesn't need ramp. The over all control theme of the deck and the ability to suspend high cast cards makes this deck flow very well.
Wouldn't card:Jhoira's Timebug or Timebender be fun?
Oh they would be fun, but they don't fit well with this deck's idea. To fit them in I would have to take out other cards that do more for me in more situations.