This is the 8122nd most frequent Polish word.
oblackim
"Oblackim" refers to something related to the Oblates, a Catholic religious congregation.
'oblackim' is used as an adjective here, describing 'klasztor' (monastery) to indicate its affiliation or nature.
Klasztor oblackim był znany na całą okolicę.
The Oblate monastery was known throughout the entire region.
Here, 'oblackim' functions as an adjective modifying 'styl' (style) to denote the characteristic style associated with the Oblates.
Przyjechaliśmy na uroczystość w oblackim stylu.
We arrived at the celebration held in the Oblate style.
In this sentence, 'oblackim' describes 'powołaniu' (calling), indicating the type or nature of calling associated with the Oblate congregation.