Flood the board with tokens, then put extra counters on all of them for a turtle-sized army.
Sets your commander and theme, then adds about 25 cards that fit plus 20 lands. You fill in the rest.
The top 40 of 820 cards that fit

#7,383$0.25James Bousema

#5,237$1.90Raymond Swanland

#3,031$0.46Raoul Vitale

#1,304$1.23

#6,434$2.68Kim Dingwall

#295$0.43Zoltan Boros & Gabor Szikszai

#5,579$3.99Chippy

#6,382$0.33

#5,839$2.70Uta Natsume

#1,522$0.30Adam Paquette

#6,483$2.78Kev Walker

#9,284$0.89Francis Tneh

#4,042$0.95Dominik Mayer

#10,061$1.29Ryan Yee

#8,766$1.76

#7,837$0.35Cristi Balanescu

#1,708$0.22Martina Pilcerova

#7,381$6.16Francisco Badilla

#12,023$87.92

#2,059$1.84

#1,855$0.31Xavier Ribeiro

#2,774$13.58Tuan Duong Chu

#5,151$0.36Simon Dominic

#2,101$0.37CatDirty

#6,438$0.32Fajareka Setiawan

#3,763$1.41Chase Stone

#7,532$0.38

#7,630$0.71Trevor Claxton

#17,677$0.11

#2,256$1.28Nicholas Gregory

#3,500$1.51Izzy

#14,591$0.14

#12,932$0.19Kev Walker

#8,441$0.87Lie Setiawan

#12,254$0.19Chippy

#1,426$0.50

#190$29.50Wayne Reynolds

#240$8.50Alex Konstad

#4,077$0.74Heonhwa

#409$29.99BODAX