K'rrik's third ability doesn't target anything (it lacks the word "target", for example, and the text "K'rrik, Son of Yawgmoth" doesn't identify any targets) (C.R. 115.1d; compare K'rrik with Primeval Bounty), so shroud doesn't affect that ability (review C.R. 702.18a; see also C.R. 115.10a).
K'rrik with shroud