Saryth untaps your mana dorks, lands and best creatures every turn, so you spend the extra mana on a huge board.
Sets your commander and theme, then adds about 25 cards that fit plus 20 lands. You fill in the rest.
The top 40 of 764 cards that fit

#5,839$2.70Uta Natsume

#1,659$3.46Scott M. Fischer

#9,576$4.55Jae Lee

#285$15.44Forrest Imel

#6,802$3.79Wayne Reynolds

#2,472$16.85

#885$12.71Howard Lyon

#3,303$19.58

#21,096$5.33Victor Adame Minguez

#966$1.16Darrell Riche

#604$0.41rk post

#7,312$0.24Vincent Evans

#10,932$0.38Michal Ivan

#543$38.37Steven Belledin

#13,905$0.26Livia Prima

#3,790$0.15Cristi Balanescu

#668$36.92

#23,284$3.49

#22,468$0.22Edward P. Beard, Jr.

#150$88.40Christine Choi

#6,578$2850.00Douglas Shuler

#4,932$2.95Terese Nielsen

#5,213$0.23Jehan Choo

#2,566$6.75Mitch Cotie

#5,734$0.36Yeong-Hao Han

#1,349$8.60Aurore Folny

#10,145$0.46William Simpson

#8,756$0.41

#3,473$0.34Donato Giancola

#1,721$8.45Tiffany Turrill

#13,222$0.21Michele Giorgi

#442$302.69Filip Burburan

#1,666$5.40Steve Prescott

#2,646$2.18Brigitte Roka & Clifton Stommel

#5,461$0.78

#5,847$0.20Yongjae Choi

#5,936$0.13Raoul Vitale

#988$3.98Daarken

#20,516$0.14

#18,079$0.19