The file for this challenge u can find it here
The name of this challenge suggested that the cipher is base85 encoded. But take a moment to think .. that the organizers would make that look so easy? No !!It is not a Sanity check or welcome challenge!!
So I went through the ctf-katana Framework, where it stated that Malbolge(an esoteric language) looks like base85 encoded.
I copied that cipher and pasted in this Malbolge decoder which popped out the flag:
pCTF{Its_r3411y_D4nt3s_H3ll}