[Start of Your Turn] If your opponent has a Digimon in play, gain 1 memory.
[Your Turn] When one of your Digimon digivolves into a Digimon with [Rock Dragon], [Earth Dragon], [Machine Dragon], or [Sky Dragon] in its traits, by suspending this Digimon, activate 1 of that Digimon's [On Play] effects.

[Security] Play this card without paying the cost.