Arata Sanada (BT5-090) - Battle of Omni

[Start of Your Turn] If a Digimon card with "Unidentified" in its type is in your trash, gain 1 memory.
[Your Turn] When one of your Digimon digivolves into "Diaboromon", you may suspend this Tamer to play 1 "Diaboromon" Token without paying its memory cost. (Diaboromon Tokens are level 6 white Digimon with a memory cost of 14, 3000 DP, and are Mega form, Unidentified type, and Unknown attribute.)

[Security] Play this card without paying its memory cost.