Ventricle Razor: Most useful active item? (Tips and Tricks all about the V. Razor)

[Retro8it]

Currently, I have 264 hours put into AB+, and within those hours, I've pretty much learned what every item does, and some advantages they may hold. The Ventrical Razor is of course, one of them.

You may be asking, "What's so special about it?"
Basically, it can help you cheese many things, like curse rooms, let me explain.

-If you place a portal right by the door of a curse room, and the other one elsewhere, you can enter the one that IS NOT by the curse door, and while you jump in and out of the portals, you'll have some invincibility frames to jump into the curse room without taking damage. Make sure you jump into the room as soon as you jump out of the portal by the door, or you'll take damage.

-If you find any blood donation machines in the arcade, or just sitting somewhere, you can use it without taking any damage by putting one portal by the machine, and the other elsewhere, like if you were doing the first trick mentioned. You enter the portal that's NOT by the machine, and then push against the machine until you "feed it health", and immediately push back so you don't take damage. You can repeat this process until the machine pays out. You can also use this method to trick demon beggars, and get free devil deal items. Note: the V. Razor doesn't work in devil deals, so you can only trick demon beggars that don't reside in there.

-Lastly, you can use this item to jump over spikes, by doing pretty much the same thing you do to cheese curse rooms.