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Whenever Piper Wright deals combat damage to a player, investigate that many times. (To investigate, create a Clue token. It's an artifact with "{2}, Sacrifice this token: Draw a card.")
Whenever you sacrifice a Clue, put a +1/+1 counter on target creature you control.
If an effect refers to a Clue, it means any Clue artifact, not just a Clue artifact token. For example, if you sacrifice a nontoken Clue artifact, such as Candy Trail from the Wilds of Eldraine set, Piper Wright's last ability will trigger.
Piper Wright's last ability triggers whenever you sacrifice a Clue for any reason, not just to activate a Clue's activated ability.
