Brew Mutagen and other artifact tokens, then cash them in for counters and artifact payoffs.
Sets your commander and theme, then adds about 25 cards that fit plus 20 lands. You fill in the rest.
The top 40 of 272 cards that fit

#12,069$0.40

#663$0.24Nils Hamm

#8,904$0.27Narendra Bintara Adi

#4,752$7.31Nino Is

#262$8.05Ben Millar

#14,458$0.24Evyn Fong

#3,765$0.64Steve Prescott

#3,696$2.39Danny Miller

#13,545$3.75April Prime

#1,643$2.09

#3,134$0.75Bastien Grivet

#184$2.37Wangjie Li

#9,545$6.76

#790$0.34

#8,546$1.57Adrián Rodríguez Pérez

#2,012$0.33Anastasia Ovchinnikova

#4,262$3.84Gabriel Tanko

#6,225$2.22Ignatius Budi

#9,234$2.75Allen Douglas

#8,323$2.75Kirokaze

#3,043$0.58Cliff Childs

#10,787$0.26Andreas Zafiratos

#5,124$2.05Simon Dominic

#1,225$6.02Maël Ollivier-Henry

#20,418$0.06Mathias Kollros

#1,855$0.31Xavier Ribeiro

#5,562$1.22

#10,756$0.26

#1,293$21.43Anthony Devine

#190$29.50Ron Spencer

#1,721$8.45Tiffany Turrill

#12,971$0.30Tomasz Jedruszek

#10,492$0.25Joshua Cairos

#927$48.89Filip Burburan

#17,614$0.17

#4,803$2.26Madeline Boni

#9,292$0.24Constantin Marin

#8,823$0.26Lucas Graciano

#13,540$0.33Ivan Dedov

#929$2.93Luc Courtois