NFD Rarity Bonus

According to the weights and rarity used during the deal, there are some bonuses applied.

Weight	Rarity	Time multiplier	Bonus
MD	Common	1	1
MD	Silver	1	1
MD	Gold	1	1
GR	Common	0.9	4.2
GR	Silver	0.9	4.2
GR	Gold	0.9	4.2
OZ	Common	0.8	9
OZ	Silver	0.8	9
OZ	Gold	0.8	9