When Glassblower's Puzzleknot enters the battlefield, scry 2, then you get . (You get two energy counters. To scry 2, look at the top two cards of your library, then put any number of them on the bottom of your library and the rest on top in any order.)
, Sacrifice Glassblower's Puzzleknot: Scry 2, then you get .
You canâ€™t pay more energy counters than you have.
Keep careful track of how many energy counters each player has. You may do so by keeping a running count on paper, by using a die, or by any other clear and mutually agreeable method.
If an effect says you get one or more , you get that many energy counters. To pay one or more , you lose that many energy counters. Any effects that interact with counters a player gets, has, or loses can interact with energy counters.
Energy counters arenâ€™t mana. They donâ€™t go away as steps, phases, and turns end, and effects that add mana â€œof any typeâ€ to your mana pool canâ€™t give you energy counters.
Energy counters are a kind of counter that a player may have. Theyâ€™re not associated with specific permanents. (Other kinds of counters that players may have include poison and experience.)
is the energy symbol. It represents one energy counter.