I should probably swap out the Ordeal of Thasaa for another Ordeal of Nylea. Also, remove the Arbor Colossus and add another Boon Satyr. Also remove the Centaur Battlemaster. I'm not a huge fan of these Heroic mechanics. It counts on your opponent targeting specific creatures. All that time and mana to drop a creature which your opponent might never target. A pretty expensive 3/3 for a 5 drop.
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I think I should remove the Tome Scour and the artifacts. replace the Memory's Journey and the other 3 cards with cards that let me fetch mana from my library. The shredding winds are nice, but I'm not sure I need 3. After a little math, the mana divide for 24 mana is about 14 Green, 10 Blue. I made it 10:10 and added 4 Simic Guild Gates. That should cover the difference between the two.
"you've got a 9/5 with Trample who can block turn 4 and attack turn 5, an indestructible ooze, and can generate 14 mana by turn 5."Dick move... Hahaha. Great deck though! I never want to play against this.