Ramp hard and discount the nine-drop so The Tarrasque arrives hasty and warded on turn five or six.
Sets your commander and theme, then adds about 25 cards that fit plus 20 lands. You fill in the rest.
The top 40 of 1197 cards that fit

#3,473$0.34

#1,659$3.46Chris Rallis

#20,085$0.26

#3,924$0.31Zara Alfonso

#442$302.69Filip Burburan

#10,932$0.38Michal Ivan

#5,839$2.70Uta Natsume

#10,052$0.17Douglas Shuler

#13,305$0.34Justin Sweet

#2,646$2.18Ryota Murayama

#16,090$0.26Jerry Tiritilli

#1,019$27.95Yoshitaka Amano

#13,222$0.21Michele Giorgi

#2,134$34.13Craig J Spearing

#9,576$4.55Jae Lee

#879$0.49Karl Kopinski

#6,591$7.96Tyler Jacobson

#3,790$0.15Cristi Balanescu

#7,276$0.40Josiah "Jo" Cameron

#9,973$0.29Andrey Kuzinskiy

#1,237$0.28John Avon

#1,753$4.82Karl Kopinski

#988$3.98Daarken

#2,473$1.35Heonhwa

#21,096$5.33Aleksi Briclot

#7,329$0.24

#1,956$1.48Néstor Ossandón Leal

#6,511$1.47Oleksandr Kozachenko

#23,284$3.49

#1,902$1.06Lars Grant-West

#2,987$16.43

#4,151$0.48

#10,176$0.14Dan Murayama Scott

#227$63.96

#9,932$0.25Johannes Voss

#2,091$0.21

#1,721$8.45

#18,403$0.22Uriah Voth

#7,133$0.35

#11,572$0.22Daren Bader