So I've managed to actually mano-a-mano Flan for a few turns with the Poker player... Who cares about danmaku mechanics if your deck doesn't have attacks (and few skills) anyway?

https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=2339671011

I was pretty scared that DOOM would stack multiplicatively and I'd be facing 40*2^8 = 10240 damage, but apparently it be only linear.

(And yes, the deck beat her in the end at 280 attack a turn, pretty close one too).
That was both hilarious, brain-bendlingly exhausting (notice the Frozen Eye as the Poker player?) and showed off a few of the amazing combo's all in one deck. Truly a special run.

Spoon + 4-of-a-kind + Men In Black + <any of the duplicating poker player cards>. Fill your deck with 10s of spades and clubs and go to town generating 100s of block and damage each turn. 5x Copied Club Shade turns clubs into spades with damage after play in the 2nd pass of the deck. Takes a couple of turns to setup, but hilarious afterwards.

I'll go ahead and experiment some more with more *normal* characters before I give feedback though. This is a bit of an outlier. (And those should be allowed, cause of *FUN*).