based on my time playing survival this the time it take for lost cards to playable again
RF Common 1bcx 14 day cool down
RF common max 4 day cool down
GF common 1bcx 7 day cooldown
GF common max 2 day cool down
RF Rare 1bcx 12 days
RF rare Max 3 days
GF Rare max 2 days
GF Rare 1bcx 5 days
RF Epic 1bcx 9 days
RF Epic max 2 days
GF Epic 1bcx 4 days
GF Epic Max 36 hours
RF Legendary 1bcx 4 days
RF Legendary Max 2 days
GF Legendary 1bcx 2 days
GF Legendary Maxed 24 hours