Jackson Lake

Partner with Rosita Farisi
When Jackson Lake or a Doctor card enters the
battlefield under your control, investigate.
The first time you sacrifice a Clue each turn,
Jackson Lake explores. (Reveal the top card of your
library. Put that card into your hand if it's a land.
Otherwise, put a +1/+1 counter on this creature,
then put the card back on top or into your graveyard.)