Mastemon (BT-21: Illustration Celebration Pack) - World Convergence - P-187

[[Digivolve] Lv.5 w/[Myotismon] in name: Cost 5]
[Trash] [Main] By deleting 2 of your level 5 or higher Digimon with [Myotismon] in their texts, play this card with the play cost reduced by 11.
[On Play] [When Digivolving] [When Attacking] [Once Per Turn] Delete 2 other unsuspended Digimon.
[All Turns] [Once Per Turn] When any of your other Digimon or Tamers are deleted, trash your opponent's top security card and return 1 of their Digimon with the lowest DP to the bottom of the deck.