G/B Midrange

this is my current deck, i know where i want to take this for now, however i wanted opinions on where i should take this with consideration of gatecrash on the release of the breeding pool and watery grave. going with a bug list. currently im thinking ghostly flicker, some form of counter, forbidden alchemy(however this would probably compete with farseek and grisly salvage). i was also thinking about devastation tide or cyclonic rift, since the deck uses ghostly flicker there will be enter the and exit the battle field abilities, so i think devastation tide may be the choice however cyclonic rift is an instant, meaning that i can just use it at the end of the opponents turn rather then only during my turn, or even in response to them casting restoration angel. its just a more versatile card, in that sense. i can only hope that the two remaining guilds in these colors produce bombs of there own, in the standard format. as i said at the start please make any suggestions in the form of what i could add with blue.