Adrenaline

Adrenaline is a rare Silent skill that draws 2 cards and gains 1 Energy for 0 Energy, then Exhausts. It's a completely free resource injection — two extra cards and one extra energy at no cost. This kind of effect is extraordinarily efficient and effectively gives you a superpowered extra turn when played at the right moment.

Adrenaline is one of the strongest rare cards available to the Silent. It's essentially free in every sense — it costs 0 Energy, provides 1 Energy back, and draws 2 cards, making any turn you play it a turn where you had one extra Energy and two extra cards. It can enable explosive turns by itself and is an auto-include in nearly any Silent build. Upgraded, the Exhaust is removed entirely, allowing Adrenaline to cycle back into the deck and be drawn again — making it even more powerful over long fights.