What does this card's "[On Deletion] If your opponent has 1 or less memory, <Draw 1>" mean, exactly?
It means that you <Draw 1> when the memory is at 1 through 10 on your side, 0, or 1 on your opponent's side at the timing when this Digimon is deleted.
Mar. 28, 2024
If this card's [On Deletion] effect activates when my opponent has 1 memory, do both the <Draw 1> and "gain 1 memory" effects activate?
Yes, both activate.
Mar. 28, 2024