Pit 100 were supposed to be the highest for this season initially until Blizzard saw that everyone was destroying 100 on the test realm. Anything past this initially saw the mobs without even elite auras on them and less than quarter health bosses lol. Riot panicked and did the stat squish then added pits to 150 before release but they never touched anything on the SB. The bug interactions made all their efforts pointless. As for your glyphs get speed ran through 100s by your son takes no time whatsoever like 2 min a run