?-6 also spawns 'Beginner' event SG so only 30 tickets. Any while I might have been lucky to get 6 gold drags in 8 odd runs of the blue drag event ?-6 took me 5 (i think) runs to complete all because of 1 RNG node >.>

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?-7 spawns the 'Advanced' SG worth 55 tickets.

To re-cap:

?-5 & ?-6 = Beginner > 25 stam > 30 tickets
?-7 = Intermediate > 50 stam > 55 tickets
?-8 = Advanced > 80 stam > 90 tickets