Blank Card + The Sun/2 of Hearts + Sharp Plug

[Shrouded]

There are many great and unbeatable combos in this game, but I never encountered this one before until today. Just thought I'd share it, if you happen to get any of these items on their own it's obviously great already, but together they give infinite health (assuming you have at least 4 heart containers and pay some attention)

[Digital Zephyr]

Or Blank Card + The Sun + Nuns habit. Ive had that few times. But guess with sharp plug + Sun + Blank Card you can spam the sun for room clears.

[Justice]

I used Blank Card + Herophant. I considere it a better choise since you can just give alway all your red hearts and have guranteed deals with the devil. Ah and of course the effect of polaroid or negative.