>>535993579
>VH+engine+support by the end of 2.4, starting with 150
right now it's 20th august, the current banner ends on september 3rd. that's 14 days until the start of 2.2
2.2 will last 42 days, same for 2.3 and 2.4,
for a total of 14+21+21+21+21+21+21= 140 days of saving
pic related is an old spreadsheet i made, the number might be out of date, but i'm getting 163 rolls for 140 days + 150 = 290
and you'd need 480 to guarantee all 3 rolls

again, my calculations are always criticized for not counting the event poly, yes, i should count them, no, i can't be bothered
tl;dr: it looks like you'd need to get at least statistically lucky