Birthright: Using Void has a chance to spawn an item previously destroyed by it while keeping the bonus stats.It's also a good idea to touch at least three books if possible before using Void, to get the free Bookworm transformation.It's much better to take Book of Virtues and gain the passive wisp effect over a minor stat boost. Book of Virtues is treated as a passive item if absorbed by Void.How to Jump causes a sudden movement, which can potentially throw you into an enemy or trap you behind rocks (the latter can be fixed by leaving the run and continuing).Devil deals also cannot be absorbed until they've been paid for. Satanic Bible replaces the boss item with a Devil Deal, which could be bad if low on health.However, taking it is fine as long as you don't forget you have it or aren't fighting him.

The Bible will instantly kill you if used while fighting Satan.

However, it is not recommended to absorb a few books for the following reasons:.

Finding a Library can be very powerful as Apollyon can use Void to gain numerous amounts of active effects from one room.

It can also be used on items formerly unidentified due to the Curse of the Blind (Pausing is recommended right after picking up the item to properly check what it is before absorbing it or not). This allows Apollyon to absorb undesirable devil and shop items, albeit by paying their cost first.

Void can be used during the 'item get' animation to absorb the held item.

Choice rooms can still be effective for copying active item effects, however.

Absorbing passive items from a room with choice pedestals will count as absorbing only one of them, this includes pedestals added by There's Options and More Options.

There's Options and More Options are amazing items for Apollyon, as they give the opportunity to absorb twice as many items that could increase his stats or add to his actives collection.

This is helpful if you want to use Void to fight the boss and then absorb the item after defeating it after all rooms have been cleared, or when a Devil/Angel Room spawns after defeating the boss and you do not have Goat Head or Eucharist.

The Battery and Charged Baby allow Void to be used twice consecutively without going into other rooms.

Knowing most item effects is very important for Apollyon, as you want to know whether or not to absorb something.

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