Bank a mountain of green mana, watch Omnath balloon, then trample over someone's face with him.
Sets your commander and theme, then adds about 25 cards that fit plus 20 lands. You fill in the rest.
The top 40 of 394 cards that fit

#4,993$3.32Mark Zug

#7,964$0.32Scott Murphy

#2,947$2.84Christopher Moeller

#4,347$19.73Steve Prescott

#1,337$19.06Mark Zug

#1,882$9.82Scott Murphy

#2,716$9.36Chris Rahn

#2,753$1.02Uros Sljivic

#903$17.34Chris Rahn

#4,870$4.69Joshua Cairos

#1,584$2.00Pavel Kolomeyets

#1,672$9.32

#2,247$8.49Mark Zug

#973$1.21Jeremy Jarvis

#841$1.00Kev Walker

#885$12.71Howard Lyon

#543$38.37Chris Rahn

#1,693$31.94Chris Rahn

#9,289$0.36

#727$5.00Kevin Sidharta

#309$20.09Campbell White

#476$41.66Filipe Pagliuso

#13,765$0.47

#4,204$3.01Chris Rahn

#5,860$0.44Brent Hollowell

#299$23.04Magali Villeneuve

#7,911$0.26

#15,584$0.95Yongjae Choi

#14,849$0.80Jason Chan

#1,707$0.19Jeff Miracola

#2,548$0.26Anastasia Ovchinnikova

#19,653Chris Rallis

#353$2.66Chris Rahn

#8,441$0.87Lie Setiawan

#10,997$0.18

#5,839$2.70Aleksi Briclot

#9,009$0.34Simon Dominic

#11,917$1.10

#1,189$12.13Antonio José Manzanedo

#331$2.07