剖腹产#678

C Section is an unlockable passive item added in The Binding of Isaac: Repentance.

• A Caesarean Section, or C Section for short, is a surgical procedure by which a baby is delivered through an incision in the mother's abdomen.
• Isaac's body resembles a Vis. The fetus shots themselves resemble Unborns.
• Prior to v1.7.5, this item had no effect other than changing Isaac's appearance and appeared in no item pools. Nonetheless, obtaining it was still required in order to unlock the Dead God Achievement.
• It was only obtainable via Death Certificate and Spindown Dice, or as a starting item for Eden / Tainted Eden.
• According to Edmund McMillen, C Section was a "dream item" whose mechanics and many hard-coded synergies were too complex to implement at Repentance's launch, with Kilburn "obsessively" working on the item and other parts of Repentance.[1]

Bug! There's no idle animation for C Section's costume, so Isaac (and every other character other than Lilith) will always appear to be walking when charging a shot, even when stationary. Bug! Tainted ??? does not have a costume assigned for C Section (despite ??? having one), and nonetheless always appears to be walking while charging a shot, even when stationary (see previous bug). Bug! While Isaac has both C Section and Incubus (including Lilith's inherent Incubus), Incubus' flying animation does not play while not firing; it floats around with no animation at all. The animation plays normally while firing.