Excel, 41 bytes

="Min"&IF(RAND()<0.0001,"ce","ec")&"raft"

I tried typing 0.0001 as 1E-4 to save two bytes. Excel changes it to 0.0001.

Excel, 41 40 bytes

-1 byte thanks to MarcMush

="Min"&IF(RAND()<0.1^4,"ce","ec")&"raft"

I tried typing 0.0001 as 1E-4 to save two bytes. Excel changes it to 0.0001.