Nephalian Detectives

Nephalian Detectives cannot have -1/-1 counters
placed on it.
When Nephalian Detectives enters the battlefield,
Investigate twice. (Create a colorless Clue artifact
token with "2, Sacrifice this artifact: Draw a card.")
"Ugh, another deader, and as usual it's a weird
one. I'll comb the site, you talk to the witnesses."