Arukenimon & Mummymon (BT16-089) - Beginning Observer Foil

[Your Turn] When [Arukenimon] or [Mummymon] would be played from your hand, by deleting this Tamer, reduce the play cost by 3.
[On Deletion] You may play 1 level 5 or lower Digimon card with [Myotismon] in its text from your trash without paying the cost. At the next end of your opponent's turn, delete it.

[Security] Play this card without paying the cost.