When Sophia, Dogged Detective enters the battlefield, create Tiny, a legendary 2/2 green Dog Detective creature token with
trample (This creature can deal excess combat damage to the player or planeswalker it's attacking.).
, Sacrifice an artifact token: Put a +1/+1 counter on each Dog you control.
Whenever a Dog you control deals combat damage to a player, create a
Food token
(A Food is an artifact with ", , Sacrifice this artifact: You gain 3 life."), then
investigate (To investigate, create a colorless Clue token. It's an artifact with ", Sacrifice this artifact: Draw a card.").