UG Madness wasn't working due to the low amount of pay-offs. Rather than removing/replacing (because UG retro frame doesn't have the highest amount of archetypes), I decided to bolster green with Oath of Druids and Gamekeeper, in the hopes of making Dementia Drake a UG strategy. This strategy could also make solid use of some of the token makers with flashback and might also open up other control/combo archetypes. That brings me to Phantom Nishoba, which is taking the place of Kangee, since that card is unplayable. 7 mana to get 1 anthem is just too much, and the non-kicker is an underwhelming bird.

Some smaller tweaks:

• Nested Shambler for Headhunter: there were too many clerics, and NS fits into other archetypes a bit better
• Crop Rotation for Sylvan Scrying: Crop Rotation is just better in all circumstances
• Yavimaya Elder for Llanowar Elves: The elder makes for a good sacrifice target. The Elves, though Iconic, get outclassed a bit by the rest, and doesn't really fit any archetypes (neither Elves nor Ramp is a main archetype)