Mephistomon (BT17-068) - Secret Crisis

While this card is revealed from your deck, this card is also treated as level 6. When this card would be played from the hand, by returning 1 [Apocalymon] from your trash to the bottom of the deck, reduce the play cost by 3.
[On Deletion] If deleted by an effect, you may play 1 [Gulfmon] or 1 level 6 [Dark Masters] trait Digimon card from your hand or trash without paying the cost.

[When Attacking] [Once Per Turn] By placing 1 level 5 or lower card with [Dark Masters] in its text from your trash as this Digimon's bottom digivolution card, this Digimon gets +2000 DP for the turn.