Yu Nogi (BT23-080 U) [Hackers' Slumber]

Product Details

[Start of Your Main Phase] If your opponent has a Digimon, gain 1 memory.
[All Turns] When any of your Digimon with the [CS] trait would be deleted, by returning this Tamer to the bottom of the deck, place 1 of those Digimon as the top security card.