She's in the Grixis colors rocking her best Nicol Bolas or Crosis, the Purger impressions
the Pokmon TCG database is a good place to start for this, but you might also find help from a friendly collector, dealer or via a collectors' group on social media
Given that these are older sets, and decks aimed at beginners, there isnt a huge amount here if youve been following the archetype decks of the current 10th series, which ends this year with the upcoming Eternity Code
Enter my friend, Scavenging Ooze, who not only cleans things up but boosts ones life total a little as well
At the end of the turn, I use BT18-088 [Takuya Kanbara & Koji Minamoto]'s inherited effect to have BT17-012 [BurningGreymon] attack, and I use BT17-012 [BurningGreymon]'s [When Attacking] effect to digivolve into this card