Some items that will cause a chest to flip are:
For most encounters the chance of getting a flip chest is increased by the various drop rate buffs a player can have, such as Tien's passive, Journey Drop buff, Oliver's passive, Septian Burner's passive, Crew buffs, aura and aura.,
However, there are cases where a 100% drop rate chest has a chance to drop an item that will flip.
In these cases drop rate buffs do nothing as they don't affect the content of the chest, only the likelihood it'll appear.
A good example of this is chest 5 in Primarch Raids which has a 2 in 3 chance of dropping a which will flip and a 1 in 3 chance of dropping a Primarch Anima which won't flip.
Because of this most players pray to hear the single rainbow sound from Chest 4 since two rainbows means they probably got two .
The two rare normal chests in the drop table for Omega Raids can flip.
If one or both drop Chest 1 can only contain an SSR Summon and Chest 2 can only contain an SSR Weapon.
The Vice-MVP gold chest can also contain an SSR Summon or Weapon and if it does it'll flip as well.
Tier 1 Summon Raids
There are two normal chests in the drop table for T1 Summon Raids which can flip.
Chest 3 is very rare and can contain either a High Orb (no flip) or an SSR Weapon (flip).
Chest 6 is a bit more common and can contain either a (no flip) or an Omega Anima of the same type as the boss (flip).
|Twin Elements||Macula Marius|
|Apollo||Dark Angel Olivia|
Tier 2 Summon Raids
There is one rare normal chests in the drop table for T2 Summon Raids which can flip.
Chest 6 is rare and can contain a (no flip) or an SSR Weapon (flip).
Proto Bahamut and Grand Order switch things up a bit since they can drop rare crafting materials, which also come from a flip chest. s and Blue Sky Crystals, unlike previous flip chests, replace normal drops (usually s) and eschew the 2% drop rate, while the replaces the guaranteed Rusted Weapon drop but still has a very low drop rate.
|Proto Bahamut||Grand Order|
Bahamut Weapons (0★)
High Level Raids
For the Omega raids, in addition to the same summons/weapons as the Extreme versions, they also have a 100% chance to drop matching-element Centrum's which always flips.
For the Tier 1 Summon raids, in addition to the same weapons as the Extreme versions, they also have a 100% chance to drop matching-element Urns, which always flip.
Maniac and Nightmare bosses have a low chance to drop Urns corresponding to the boss's element in flip chests. In addition, Very Hard and above bosses can drop event weapons and/or summons from flip chests, with higher difficulties having higher chances. The rate of event flip chests is much much higher than 2%.