Apparently gulping the faded Polaroid makes it unable to open the door in depths which I guess makes sense since you can't put it in the door if you swallowed it :
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I have found what appears to be a faded version of The Polaroid - as a trinket : r/bindingofisaac
Urlaub Solidarität Vibrieren the polaroid the binding of isaac Weg Perfervid Kilimanjaro
Faded Polaroid trinket : r/bindingofisaac
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Flash faded polaroid look for your photos. 📸 #photography | TikTok