Talk:Beating Embryo/@comment-24986675-20140527105734

Conclusion: From what i tested, Beating Embryo item stacks ADDITIVELY, i.e., 2 for 60% chance to double the effect, 3 for 90%, and 4 for 100% approximately.

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I tested this item with Captain's Brooch (which is pretty easy for me to see the effect). With 2 Beating Embryo and 100 consecutive times of chests calling down, 59 out of 100 had 2 chests (effect was doubled), while 41 times for only one chest summoned(the original effect). So I think it shows an approximate 60% chance of doubling the effect of use item.

Just after that, I picked up a third Beating Embryo and did a following successive 100 times test, similar to the previous one. This time I got 89 of 100 times showing doubled effects, which is around 90%. It seems that this item stacks linearly. To test this, I picked a fourth item up, did the same test again, and never had the original effect once. I am just not that sure whether it's 100% chance, but at least there won't be much difference from the REAL chance.

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Sometimes you can only see one calldown chest while it is actually two chests that are located in the exactly same position. You have to open the first one in order to see the other one. Also, the locations of calldown chests depend on your character's position, and there's NO gaurantee that the chest/chests will be located near your character, on the same platform with your character, or in the same screen with your character. A good way to tell the calldown chests apart from the chests orignal on the map is that they're normally more expensive because their prices scale with time.

(Maybe someone can put this part on Captain's Brooch page ^_^)