Whitepaper

Adventure Level	Minimum Hopper Level Required
1	1
2	10
3	15
4	20

Cost Function	Level
$\frac{x}{2}$	$2 \leq x \lt 21$
$\frac{x^{1.43522}}{7.5}$	$21 \leq x$

Rarity Level	Total FLY Allocation
Common	50
Rare	84
Exceptional	166
Epic	416
Legendary	2500