Glint-Sleeve Siphoner

Glint-Sleeve Siphoner

Creature - Human Rogue | Power/Toughness: 2 / 1 (CMC 2)
Menace
Whenever Glint-Sleeve Siphoner enters the battlefield or attacks, you get (an energy counter).
At the beginning of your upkeep, you may pay . If you do, you draw a card and you lose 1 life.