Deck of Many Things

The Deck of Many Things is a magical item that has appeared twice in the Velmaverse continuity. These being the Lost Mine of Phandelver and Tomb of Annihilation campaigns. The deck has an assortment of magical cards that were arranged in a set deck. They were enchanted with great magic that were never meant to be used lightly (but of course are anyway).
In both campaigns they have been opened and used, thus drastically changed the direction of the game:
=== Lost Mine of Phandelver ===
During the Cragmaw Castle Altercation, Seranas was forced by Omniscidor's god to pick from the deck after cutting Gogdor's penis off. She picked the card 'flames'. Though the truth to this matter has forever remained a mystery, it is theorised that the flames card made the Russian Lady (a demon in disguise) turn on the party and kill them all. As described in D&D Beyond: "Flames: A powerful devil becomes your enemy. The devil seeks your ruin and plagues your life, savouring your suffering before attempting to slay you. This enmity lasts until either you or the devil dies". 
=== Tomb of Annihilation ===
Sometime after the Fort Beluarian Failure, whilst the Comrades were camping in the wilderness, Jaffie went out into the forest to scavenge. Whilst chasing after a small creature, he was suddenly approached by an old man, who gave the dwarf a deck of cards, telling the dwarf to hold onto them until he came back to retrieve them. When he left, Jaffie picked from the deck, not knowing what it truly was and picked the card with a dagger on it, 'rogue'. Due to this, it seemed that Barbara, the owner of 'The Inn of the Thundering Lizard', suddenly turned on him and upon Jaffie eventually returning to the inn, she would summon the Balor that would ultimately play a major role in the destroying Port Nyanzaru. After the destruction, Jaffie gathered around the Comrades to offer each member a card to pull:
* Alistair picked the card 'Vizier', though it is unclear as to what she used this on.
* Dave picked the card 'Ruin', which everyone watching was horrified seeing the little gay Dragonborn go completely naked, losing everything aside from his magical axe and strangely, his pan flute.
* UwU picked 'Balance', though nothing visibly seemed to occur to UwU. She just went back to cooking and cleaning.
* Jaffie picked the card 'Knight'. The dwarf suddenly got a pat on the back and was shocked to see a fully cladded dwarven fighter, decked out in steel-plated armor. “Sir Jaffie, I am here to serve you, I shall henceforth carry your weapons, shine your boots and perhaps give the occasional back rub.” Jaffie, though a bit conflicted, wouldn’t turn down the offer of free back rubs and so took him on.
* Zook on the other hand was the luckiest of the lot, picking the card 'Throne'. As he picked this card, he felt he could epically destroy any libtard who got in his way with facts and logic. Furthermore, on the highest hill of the ruined Port City, a brand new keep had magically appeared on the top, making him the rightful owner.
* As for Camila, it is unknown what befell the feline furry. Did she die in the impact of the meteor? Did Barbara’s wounds finish her off? Or could she have somehow, survived?… (picked 'Void')
It was later revealed that the old man had been Acererak in disguise to cause turmoil within the group. However, he would later be defeated by UwU throwing a dagger at him.