[Coldsaturn]

Man, Trump's tariffs sure make a difference lmao
In my shop 6480 purple diamonds (the ones you exchange in red diamonds) cost 99.99 euros, which would be 112 dollars

Anyway, yes if you don't count for luck you'd need 150 pulls to guarantee MOF companion.
You need to first secure 70 pulls so that you get the first of the two cards. Hopefully. You could still lose the 50/50 and get another unrelated 5 star (in which case you need 140 pulls to guarantee the first MOF, and then the crate at 150 pulls to guarantee the second MOF to unlock the companion).

Let's pretend we're trying to get to the first 70 pulls, let's start with the shop for this event:

- Snowfall pack I gives you 2 pulls
- Snowfall pack II gives you 18 pulls (you can buy it 3 times)
- Snowfall pack III gives you 50 pulls (you can buy it 5 times)

You could technically secure the first guaranteed 5 star by buying pack I, pack II (x3), pack III (x3 instead of x5)

At which point you'll know how lucky or unlucky you are. I can tell you how much this would cost me, but your shop is more expensive than mine. It would be 48.93 euros to me for the first 5 star.

BUT. You need to count for the red diamonds you can still farm from the game, which would give you 1 pull every 150 red diamonds. If you have Aurum pass you will get 1 pull per day just with the daily activities + the aurum. It's not much but it's also not the only thing you can do if you can grind orbits or abyssal chaos (it's the start of the week, the claw machine and kitty cards can also give you diamonds) and upgrade memories, you could realistically build up to another 150 diamonds per day. So let's pretend you also have 1-2 added pulls per day.

Let's also pretend I've been very unlucky and the 70th pull didn't give me the first MOF. Now I have to buy up to other 70 pulls to guarantee it.

- I can still buy 2 Snowfall pack III and it will give me 20 pulls
- Snowfall Pack IV gives me 36 pulls (x3)
- Snowfall Pack V gives me 20 pulls per purchase. I buy it once and I have 76 pulls total, which will guarantee the first MOF if I've been unlucky with the first 70 pulls. If I was lucky and got the first MOF in the first 70 pulls, I can now either get the second, rank1 the first (if I get it again), or get an unrelated 5star card.
All this will cost me 97.94 euros. You will have crossed the hundred dollars threshold most likely.

I am now 4 pulls away from the crate, since I did 70 pulls + 76 pulls. I can get roughly 2 free pulls per day between aurum pass + dailies + regular free diamond farming in the game, so I can get the ones I'm missing within the time frame of the event and get the companion by spending a max total of 146.87 euros if I'm the unluckiest person on earth. Which can happen.

If you're spending money my advice would be to buy 1 pack, go and pull one at a time until you exhaust your resources, then go and buy another pack, again pull one at a time etc. This will avoid wasting money by bulk buying when you might get the card sooner than you think.

I honestly haven't seen people using the purple diamonds shop unless they're whales or twitch streamers going for insane number of pulls in one go for a stream.