Fetch and ramp lands into play for landfall triggers, then let Vorinclex double the mana from all of them.
Sets your commander and theme, then adds about 25 cards that fit plus 20 lands. You fill in the rest.
The top 40 of 500 cards that fit

#2,774$13.58Tuan Duong Chu

#6,802$3.79Wayne Reynolds

#2,473$1.35Heonhwa

#4,077$0.74Heonhwa

#327$12.11Winona Nelson

#504$1.98Darrell Riche

#1,659$3.46Scott M. Fischer

#3,313$5.06Simon Dominic

#663$0.24Eric Deschamps

#9,576$4.55Jae Lee

#618$19.99Warren Mahy

#2,088$21.44Adam Rex

#693$12.02Grzegorz Rutkowski

#601$26.39Ron Spencer

#2,845$25.57Gabor Szikszai

#1,862$0.25Ryan Yee

#1,128$26.15Matt Stewart

UnrankedCristi Balanescu

#917$25.23Daniel Zrom

#295$0.43Aleksi Briclot

#17,257$0.10Jeff Remmer

#3,303$19.58

#15,326$0.16Paolo Parente

#4,151$0.48

#2,373$0.23Jason A. Engle

#1,312$1.67

#1,889$17.93Ashley Mackenzie

#240$8.50Alex Konstad

#302$29.49Florian de Gesincourt

#3,044$37.27

#308$9.26Leanna Crossan

#328$5.82Chippy

#1,237$0.28John Avon

#1,721$8.45Tiffany Turrill

#1,140$0.31Billy Christian

#184$2.37Lucie Louxor

#1,595$5.22Nils Hamm

#5,911$0.41Zack Stella

#9,292$0.24Constantin Marin

#7,381$6.16Leesha Hannigan