Pay life for cards and tutors, then claw the life back with drain and lifegain.
Sets your commander and theme, then adds about 25 cards that fit plus 20 lands. You fill in the rest.
The top 40 of 837 cards that fit

#8,100$2.18Justyna Dura

#4,697$1.14Donato Giancola

#518$24.13Mark Tedin

#9,658$0.63Daarken

#6,339$1.03Helge C. Balzer

#4,392$0.26Thomas M. Baxa

#1,352$9.64Jeremy Jarvis

#2,403$5.07Kieran Yanner

#2,892$1.42Alexis Ziritt

#460$78.68Chris Rahn

#15,784$0.07Carl Critchlow

#2,578$3.48Anthony Palumbo

#271$9.26Jonas De Ro

#11,532$35.63Vilhelmas Banys

#15,396$0.27Nils Hamm

#3,058$2.26Tiffany Turrill

#8,209$0.24Jarel Threat

#1,999$0.70

#1,720$0.26

#2,779$4.80

#1,121$9.76Tyler Jacobson

#11,419$0.27Zara Alfonso

#259$26.37Bryan Sola

#3,581$0.25

#10,883$0.32

#3,384$10.60Kieran Yanner

#14,218$0.27

#1,077$1.11Chase Stone

#1,235$3.48Immanuela Crovius

#8,979$0.29ZIUK

#27,993$0.45Lie Setiawan

#1,051$0.23Frank Frazetta

#3,600$0.45

#95$110.79Justine Jones

#1,851$5.75

#8,183$4.34

#8,055$0.26L.A. Draws

#7,459$0.30Jorge Gutierrez Garcia

#2,256$1.28Nicholas Gregory

#2,723$3.31Volkan Baǵa