Once per turn, at the start of the Damage Step, if an Insect monster battles: You can target 1 card you control and 1 card your opponent controls
Geomathmech Final Sigma X FIRE Level 12 [ Cyberse / SynchroEffect ] ATK 3000 DEF 0 1 Tuner + 1+ non-Tuner monsters Unaffected by card effects, except "Mathmech" cards, while in the Extra Monster Zone
Thanks goes to Steffenka for compiling the set list for this story
I've provided a text file to explain how stuff works, though it will be assumed you have a basic understanding of GIMP tools
Giving you access to that mana as soon as you find it is incredibly powerful, and made the endless Evolving Wilds reprints we saw in sets after Throne of Eldraine feel a little underwhelming in comparison
Its not the most powerful thing to do out of context, but one of the coolest lines in an aura-focused deck is for Pattern to tutor up Storm Herald or Bruna, Light of Alabaster