Rika Nonaka (BT17-085) - Secret Crisis

[Start of Your Main Phase] If your opponent has a Digimon, gain 1 memory.
[Main] By placing this Tamer and 1 [Kyubimon] and 1 [Taomon] from your trash as 1 of your [Renamon]'s bottom digivolution cards, that Digimon may digivolve into [Sakuyamon] in the hand for a digivolution cost of 4, ignoring its digivolution requirements. If this effect digivolved, you may return 1 Option card from your trash to the hand.

[Security] Play this card without playing cost.