Skip the nine-mana wait: stuff the graveyard, then reanimate Valgavoth and other giants straight onto the battlefield.
Sets your commander and theme, then adds about 25 cards that fit plus 20 lands. You fill in the rest.
The top 40 of 411 cards that fit

#4,790$0.87Psydrian

#2,001$6.20Ricardo Cavolo

#14,592$0.11Karl Kopinski

#14,766$0.24Jason Rainville

#8,455$0.91Ben Wootten

#14,526$0.99Deruchenko Alexander

#2,084$0.35Fay Dalton

#5,785$0.47Anato Finnstark

#14,534$2.21Tyler Walpole

#960$28.70Dmitry Burmak

#4,982$0.24Wayne England

#1,572$17.55Yongjae Choi

#3,435$0.90Rorubei

#223$7.15Helge C. Balzer

#11,473$15.33Martin Ansin

#3,058$2.26Tiffany Turrill

#323$11.89

#5,593$8.30Viktor Titov

#7,751$0.30Martina Fačková

#1,980$0.34Ravenna Tran

#538$0.51Svetlin Velinov

#2,850$2.57Yongjae Choi

#8,231$0.34Whit Brachna

#14,022$0.19Slawomir Maniak

#458$3.12Mark Winters

#1,232$0.61Satoru Senda

#2,296$1.91Izzy

#1,901$0.26Chris Cold

#725$19.08Jana Schirmer & Johannes Voss

#10,993$0.72

#713$7.63Yeong-Hao Han

#11,000$0.10Vance Kovacs

#12,156$0.50Andrew Mar

#354$2.25Brian Horton

#4,005$0.57Dana Knutson

#9,040$0.25Mark Hyzer

#6,115$0.25

#4,985$0.31Michal Ivan

#8,895$0.22Titus Lunter

#4,785$4.05Lucas Graciano