How does the Sixth Sense Joker works?

[Landfar]

Can someone please explain how this card works? I don't quite understand the wording here. I assumed that if you have a one "6" card in your first hand the joker will change it into another card. But nothing happened at the start of the round and neither after I played my hand, so perhaps I am wrong.
Here's the card description: https://steamcommunity.com/id/Landfar/screenshot/2501256932186608546/

[Ronald Brain]

Messaggio originale di Landfar:

Can someone please explain how this card works? I don't quite understand the wording here. I assumed that if you have a one "6" card in your first hand the joker will change it into another card. But nothing happened at the start of the round and neither after I played my hand, so perhaps I am wrong.
Here's the card description: https://steamcommunity.com/id/Landfar/screenshot/2501256932186608546/

Basically, if you play a single 6 (any suit) as your first hand while this Joker is in your possession, that 6 will be removed from your deck and a Spectro card will spawn in your consumable slot (Make sure you have a room for it). This Joker is very powerful if you happen to get lots of 6 due to Spectro / Booster Pack / Death them, as it allows you to get Spectro cards for further modification of your deck.

[Wyldstyle]

The first hand you play in the round should contain only a single 6 , if you play only a six it would give a spectral card (need to have a free consumable slot) and destroy the 6.

[Landfar]

Ah, so that's how it works! Thank you both, you've been very helpful.