I just realised that I've never seen this question posed before. This got me thinkin' for me new Dark deck. I probably shouldn't be asking rules based questions any more but this one had me mighty confused.
You have 2 DragMals in your hand, 4 jank cards and a LVL4 Friend on the field. You can discard cards to lower DragMal's level, aye? If I discard 4 cards from my hand that means my DragMal is now LVL5 and playable, but does this discard of the jank cards affect just the one DragMal, or both of 'em?