Analog Boy (2 copies) is a good card for search power with only 2 costs to play, not only that when the LV5 digimon (with Digivolution source) gets destroyed, we also can gain 1 memory from this tamer and hatch one egg if the raising area is empty.
The 2 cost white option card Win Rate: 60% (Effect: If you have a Tamer in play, you may use this Option card without meeting its color requirements.[Main] The next time one of your Digimon digivolves this turn, you may trash 1 Digimon card in your hand of the same color as the digivolving Digimon to reduce the memory cost of the digivolution by 4.), I put only 1 copy to try out. But to pay 2 costs and be able to save 1 memory seems not very useful (all this deck black digimon needs max 3 cost to digivolve). For white Digimon Zwart, of course I won't trash 1 white Digimon since I only have 4 Zwart in the deck. (This card will be more useful for Diaboromon or color that its LV6 is expensive to digivolve).
I used 4 copies of [BT3-061] Chuumon for memory control. It is a must to deal with memory abuse in the current meta.