James Thoreau, Investigator

Eminence-At the beginning of your upkeep, if James
Thoreau, Investigator is in the Command Zone, or
on the battlefield, investigate.
The activation cost for Clues you control is reduced
by {1}
Deductive Brilliance-At the beginning of each
opponent's precombat main phase, choose a card
type. That player then reveals the first card they drew
on their draw step. If the chosen type matches the revealed card, the first spell they cast on their turn is countered.