Kessig Tracker

When Kessig tracker enters the battlefield create a colorless Trap artifact token with "{t}, Sacrifice
this artifact: Tap target creature."
Whenever you sacrifice a Trap token, Investigate.
"Tell your slayers to examine those traps. They may be
all beasts, but these aren't the beasts we are used too."
-Alena, Trapper of Kessig to Higa, slayer-captain of
Gastaf