One of the most attractive parts of Tower Of Fantasy is its gacha system, and being an MMORPG it's hard to introduce a system like this in line with the background of the game, but the developers have done it perfectly by creating a lore-related explanation for the main character to be able to use different characters and weapons.
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The main reason to pull on the summoning system is to obtain Simulacra. These are basically characters that come with their special weapon. Once you acquire a Simulacra, you can use that weapon on any other character of your choice. It's possible to equip three different weapons on your character.
This is one of the first banners that you'll unlock as you progress the main story in the game. This is the standard banner of this game, and it has two different variations. One of these variants requires Gold Nucleus to summon, and the other one requires the Black Nucleus.
The first variant, where you can pull with Gold Nucleus, has a mercy system that allows you to get a guaranteed SSR Weapon/Simulacra every 80 pulls. This pity does not reset if you get an early SSR weapon. So, you can get an SSR on the 79th pull, and you will still have a guarantee on the next pull.
Other than that, there's a soft pity system that might allow you to get another SSR at around 30 pulls into the pity. This is not a 100 percent chance, so there is a world where you might not get a single SSR until you pull 80 times.
Here's the general probability of getting SSR and SR weapons from this banner:
Further, there is a special system for managing duplicate weapons. If you've pulled a certain weapon already, you can always get it again from the same banner, and this allows you to
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