Recent tournament scenario vs Senor Massacre: 1) Smoke the area including the Speculo and the target. "What was that?" 2) Move into base and cut them in half. "I thought he was good at close combat..." 3) Re-impersonate in smoke. When smoke clears, picks up fallen body of Massacre "Why cruel world? He was so young"
Another one: you can leave a template close enough to your target without actually touching it to avoid it being able to Dodge away, possibly making it more order-intensive for you on movement alone, and/or making you come out of smoke / throw smoke again.
Also, given Massacre's NBW, it was a roll of Speculo's 20 against Massacre's 23. Risky, but it paid off, apparently.