Sir Troyth, Iron Legionnaire

At the beginning of your upkeep, or whenever
you Investigate, create a 1/1 white Human
Soldier creature token.
Whenever 4 or more Humans or Soldiers you
control attack, Investigate.
{1}{g/w}{g/w}: Create a 1/1 white Human Soldier
creature token, then Investigate.
{1}{g/w}{g/w}: Exile 2 cards from your graveyard, then Investigate.