The second card that is very useful for ShineGreymon deck is the new tamer in BT04, [BT4-092] Marcus Damon. If any attack from a digimon with name "Greymon" in it, rest this tamer to gain 1 memory. Marcus Damon tamer can be summon for free from RizeGreymon main effect, using him to reset the memory to 3 when "start of your turn", and then get more memory when attacking with ShineGreymon.
The red option card, [BT4-100] Trident Revolver, is to delete 1 of opponent's digimon with 6000DP or les, then can play a tamer card with memory cost 4 or less for free. Above, we talked about using 2 tamers with Rizegreymon in digivolution source to deduct one digimon 10000DP. If we add 6000DP from this option card, it will able to deduct up to 16000DP, equal to a powerful LV7 digimon such as Omegamon.