IF you have enough SC and if you wish too, You can go for 165 SC for guarantee Black/Plat unless you have pulled one:

Guaranteed Platinum & Black Edit

As of Nov. 16th, 2017, players can obtain a guarantee of a Platinum or Black unit if certain conditions are fulfilled.

If a platinum unit is not drawn within 9 summons (45 SC), the player is guaranteed a platinum unit on their 10th use. If that 10th use yields a black unit, the guaranteed platinum will come from the very next use.
If a black unit is not drawn within 32 summons (160 SC), the player is guaranteed a black unit on their 33rd use. If the player is also guaranteed a platinum unit on that 33rd roll, the black unit will be drawn first, and the platinum unit afterward.
The counter will apply to all Premium types. For example, if a player rolls 32 non-black units on Premium 1, then they can obtain their guaranteed black on Premium 2 instead.
Tickets will not reset the counters (Trading Post plat, Rank 10 Black ticket, etc.).
The counter does not reset with time.
http://aigis.wikia.com/wiki/Shrine#G...inum_.26_Black