Magneto opening a chest does not make the other reward disappear. Picking up the other reward afterwards will only remove the empty chest, and picking up the contents of the chest will not make the other reward disappear, letting Isaac take both rewards. This does not apply to chests with items in them, which disappear or make the other reward disappear as normal.
This page was last edited on 12 April 2021, at 14:14.
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