When opponents are at fewer than 40 cards remaining in their libraries, you can use the lifegain to kill them really easily
2x Flounder, Voice of Reason 2x Goons, Maleficent's Underlings 2x Magic Golden Flower Cost 2 Cards 3x Aurora, Regal Princess 3x Coconut Basket 2x Frying Pan 2x Gramma Tala 2x One Jump Ahead 2x Prince Eric 2x Ransack Cost 3 Cards 2x Hercules, True Hero 2x Jasmine, Disguised 2x Kristoff, Official Ice Master 3x Mickey Mouse, Detective 2x Smash Cost 4 Cards 3x Aurora, Briar Rose 3x Maleficent, Sinister Visitor Cost 5 Cards 1x Aurora, Dreaming Guardian 2x Beast, Hardheaded 1x Grab Your Sword 1x Maleficent, Uninvited 2x Simba, Rightful Heir Cost 6 Cards 2x Mufasa, King of the Pride Lands 1x Scar, Mastermind Cost 7 Cards 1x Simba, Returned King Cost 8 Cards 1x Maui, Demigod What Do These Cards Do
This is great and an easy pick for the best green common
Terra, Magical Adept / Esper Terra Terra, Magical Adept, discounting the transformed side, is already a good 4/2 creature that mills and gives you a little value