Fill the table with elves and druids, and let the whole grove tap for mana.
Sets your commander and theme, then adds about 25 cards that fit plus 20 lands. You fill in the rest.
The top 40 of 357 cards that fit

#879$0.49Karl Kopinski

#2,472$16.85BODAX

#7,276$0.40Josiah "Jo" Cameron

#1,909$5.15Anna Steinbauer

#3,790$0.15Cristi Balanescu

#13,305$0.34Justin Sweet

#5,963$3.59Larry MacDougall

#766$1.50Rebecca Guay

#23,284$3.49Gustavo Pelissari

#3,484$1.19Alan Pollack

#4,180$1.10Cyril Van Der Haegen

#3,924$0.31Zara Alfonso

#1,196$5.77Chris Rahn

#10,052$0.17Douglas Shuler

#3,103$13.39D. Alexander Gregory

#16,090$0.26Jerry Tiritilli

#2,627$0.31Johannes Voss

#18,403$0.22Uriah Voth

#2,091$0.21Nils Hamm

#8,740$79.22Ron Chironna

#1,426$0.50Scott M. Fischer

#13,710$0.18Nia Kovalevski

#2,240$0.44Scott Murphy

#641$0.93Daniel Ljunggren

#6,802$3.79Wayne Reynolds

#13,327$0.27Darrell Riche

#14,396$0.16Yongjae Choi

#16,437$0.06Willian Murai

#4,414$7.75Steven Belledin

#18,683$0.16Ron Spears

#9,932$0.25Johannes Voss

#11,649$0.16Quinton Hoover

#2,308$0.95Pete Venters

#966$1.16Darrell Riche

#12,393$0.17Christopher Rush

#1,111$18.06Sam Guay

#7,457$0.11Magali Villeneuve

#2,867$1.94Larry MacDougall

#3,238$3.59Ekaterina Burmak

#215$1.49Justin Hampton