Per 
Item #: SCP-XXXX-1
Object Class: Keter
Special Containment Procedures: SCP-XXXX-1 is to be contained in a 1x1x1 meter room heated to 500K in SCP-XXXX-2, glass jar that is strapped down and cannot be opened no matter what and all personnel guarding the room must be rotated around every three weeks and given a Class-D amnestic.
Description: SCP-XXXX-1 is a four cintimeter long spider of no none origin inside of SCP-XXXX-2, a glass jar that is not affected by anything outside and is unbreakable and can only be opened from the lid. SCP-XXXX-1 is Immortal and invulnerable to everything but heat and thus must be kept in a room heated up to 500 degrees Kelvin to make sure it is weakened and cannot escape from its jar. SCP-XXXX-1 once out of its jar can multiply extremely quickly via anomalous means and create instances of SCP-XXXX-A,which are not Immortal and can only be destroyed by heat. all staff around SCP-XXXX-1 constantly for 5 weeks will begin to go crazy and attempt to open SCP-XXXX-2 by either attempting to shatter the jar or open it normally. Once out of the jar SCP-XXXX-1 will begin to multiply rapidly eating anything organic or living, and will not stop until all organic life has been devoured causing an ARBH-Class "Insect Hell" scenario. SCP-XXXX-1 seems to have a high intelligence the more copies there are the more things they're all able to do.
Discovery SCP-XXXX-1 was discovered next to ██████ in a glass jar and was taken to site-██ for containment and testing.
Addendum SCP-XXXX-1: SCP-XXXX-1 manages to escape out of its jar then immediately begins looking for human host to multiply SCP-XXXX-1 after failing to find a human host for about 5 minutes collapses on the floor and is later put back in SCP-XXXX-2.
Note: This event shows that SCP-XXXX-1 is intelligent on its own and knows what it needs to survive and multiply.
Incident SCP-XXXX-1: SCP-XXXX-1 began to violently shake SCP-XXXX-2 attempting to tip it over and succeeding in tipping over the jar and opening the the lid then breaching containment killing then consuming foundation personnel quickly multiplying into thousands of copies of SCP-XXXX-A escaping into different parts of site-██ killing and consuming fifty-eight personnel and injuring seventy-two others resulting in the site being evacuated and contingency alpha being enacted before containment was achieved.
Note from Dr.Clef: This breach was absolute madness and I find it very interesting how SCP-XXXX-1 managed to even get out of the room due to the heat, it might be posses some low level adaptation abilities, and if that's the case, we need to be more careful with its containment.
CONTINGENCY BETA: In the event of a stage one breach all doors next to the containment room are to be closed and the room is to be heated to up to 6,000K for 20 minutes.
CONTINGENCY ALPHA: In the event of a stage two breach the site is to be shut down and heated to 15,000K.
CONTINGENCY OMEGA: All on site nuclear bombs are to be detonated and all remaining instances of SCP-XXXX-A are to be found and burned via ANY means necessary.
Due to the dangerous nature of SCP-XXXX-1 all further testing of SCP-XXXX-1 has been strictly forbidden via request of 05 counsel
