It is said if you know your enemies and yourself, you will not be imperiled in a hundred battles…
Sansen no Sai / Three Tactical Talents
You can activate only 1 card with this card’s name per turn.
(1) If your opponent has activated a monster effect previously during your Main Phase this turn: Activate 1 of these effects;
● Draw 2 cards.
● Take control of 1 monster your opponent controls, until the End Phase.
● Look at your opponent’s hand, and if you do, shuffle 1 card from it into the Deck.
TL note: my gut tells me a pun may be nearby, but the effect ties into the name’s explicit writing pretty well: control your supply lines, convert enemies into allies or otherwise turn the enemy’s actions against them, and deny your opponent access to materiel. The fan held by the armored individual in the art seems to refer to the concept of tenchijin, an idea of there being three constitutent parts of life – the heavens, the earth (as in nature), and humankind itself. (We’ve seen this the tenchijin concept before, in the Meklord Emperors Skiel, Granel, and Wisel.)