Now, in my opinion, if you are playing Green, you should build a bit differently, even if you are running 5 colors
A heavy land theme could give it a chance to break out, however, and if it does the gains could be huge
5 Unstable Harmonics / Rhystic Study By Riot Games - $63.98 SLD #478 Secret Lair x Arcane This card from the Arcane Cross-Over Secret Lair drop is based on Jayce and Viktor Talis' discovery of Arcane magic and their work in using science to harness this power
You should win as soon as you have Ygra in play and two Cauldron Familiars between your battlefield and the yard
How many Secret Rares are in Prismatic Evolutions
Its also tough to try and decide if you should play a big creature, or save an instant spell to protect something else