Unlike the list of rarest Pokemon cards I shared, there is more stability to what everyone refers to as the most valuable when it comes to MTG (with some exceptions, which Ill detail below)
Its the one you remember from Cube, and you probably have to run this assuming your colors allow it
Confirm you are buying the 118 SIR and not the cheaper 108 Ultra Rare, since both are the same Supporter
The core of the deck comes from the trio of main Adamancipator monsters, those being Adamancipator Researcher, Adamancipator Seeker , and Adamancipator Analyzer
Monsters of that kind already on the field have their effects negated for the turn as long as they stay on the field as well
(Draw 1 card from your deck.) Lower Text [When Attacking] If this Digimon has 6000 DP or more, delete 1 of your opponent's Digimon with 3000 DP or less