Only you keep your mana between phases, so you tax and lock the table while Omnath quietly grows.
Sets your commander and theme, then adds about 25 cards that fit plus 20 lands. You fill in the rest.
The top 40 of 475 cards that fit

#1,753$4.82Karl Kopinski

#4,961$6.25Pete Venters

#2,471$2.18Filip Burburan

#2,114$2.42Martin Ansin

#1,019$27.95Filip Burburan

#6,591$7.96Tyler Jacobson

#1,659$3.46Scott M. Fischer

#5,779$2.51

#20,085$0.26

#8,872$3069.50Nicola Leonard

#3,473$0.34Donato Giancola

#2,473$1.35Heonhwa

#2,646$2.18Ryota Murayama

#9,359$16.68Seb McKinnon

#8,569$1.09Jaime A. Zuverza

#5,024$0.80

#10,932$0.38Michal Ivan

#1,250$33.86Richard Luong

#1,956$1.48Néstor Ossandón Leal

#2,373$0.23Jason A. Engle

#13,222$0.21Michele Giorgi

#14,594$8.24

#13,305$0.34Justin Sweet

#9,128$113.24

#8,379$10.05Marco Nelor

#1,685$21.96

#1,778$0.22Winona Nelson

#9,576$4.55Jae Lee

#5,889$0.22David Gaillet

#6,513$0.43Joshua Howard

#407$14.06Scott Murphy

#2,824$4.94

#14,189$3.98

#25,833$0.31Wayne Reynolds

#1,209$9.16Aaron J. Riley

#6,511$1.47Oleksandr Kozachenko

#3,924$0.31Zara Alfonso

#3,790$0.15Cristi Balanescu

#27,020$0.43Rob Alexander

#7,276$0.40Josiah "Jo" Cameron