6 cards where the text includes “countered” and the set is “mkm”

Caught Red-Handed (Murders at Karlov Manor #115)
Long Goodbye (Murders at Karlov Manor #92)
No More Lies (Murders at Karlov Manor #221)
Out Cold (Murders at Karlov Manor #66)
Slice from the Shadows (Murders at Karlov Manor #103)
Suspicious Detonation (Murders at Karlov Manor #145)

This search is finished. Now the real work can begin.