Aphetto Alchemist is looking a little rough these days.

Zhur-Taa Druid is a good one if you can fit in Sylvan Caryatid or red mana to cast it.

@MonsterIslandMisfit I don't really want to spread the focus of the deck too thin, as it is right now Illusionist's Bracers are a dead draw without Kiora's Follower . The Deck works pretty well without splashing red. I know some people have made Kiora's Follower combo decks using Izzet creatures like Niv-Mizzet, Dracogenius , or Izzet Staticaster but I wanted to stick with just U/G for constancy's sake.

Zegana seems a little out of place in here unless shes to come in before you make hydra infinitely big or polukranos infinitely monstrous. After you do shes a dead draw unless you wanna mill yourself to death. I would drop her for 2 more cyclonic rift mainboard or one more polukranos and one more prophet of kruphix or 2 Inspiration since you need more card draw. +1

Or Urban Evolution is prolly better than Inspiration but at the cost of instant speed.

If you're going for infinite untaps (Read: Infinite Mana) then you may want a way to abuse that. You have the right idea with Mistcutter Hydra , Polukranos, World Eater , and Enter the Infinite , but I would personally want an instant win. Maybe splash red for Clan Defiance , and Volcanic Geyser .

How is Urban Evolution working for you now? Much better than Zegana right? :)

@FluffyNinjastar At first I splashed red for Niv-Mizzet, Dracogenius , Clan Defiance , Zhur-Taa Druid and Volcanic Geyser , but I like the consistancy you get with just running g/u (other combo pieces are just dead draws instead of being useful alone)

I was looking at 9+ Infinite Combos in ONE Deck? IN STANDARD?! and stumbled upon this deck.
Using Fated Infatuation + Kiora's Follower is a great idea to get another one out if you can't draw it, I didn't think of that.

I think it would be better to main board 4x Cyclonic Rift because it helps you win.
Either that or add Retraction Helix .
For example, if you have your untap loop set up, and are holding a Mistcutter Hydra , you can bounce everything they have, and swing for an unblocked, hasted win.

I feel like Prophet of Kruphix just gets in the way.
Either you don't have the five mana to cast so its a dead draw, or you have plenty of mana, but nothing to use it on.
I would rather have some Omenspeaker - early game chump blocker that helps get what you need.

Overall, good job! A competitive deck that's not too expensive. +1

Razortip Whip for instant win! or even fancier, Codex Shredder ! Clone , Fated Infatuation , Polymorphous Rush to help get out the 2 Kiora's Follower s needed.