2Speed Boost
Boosts your energy regeneration speed.
Energy2
Duration6 s
TargetsYou
Max level8
How it plays
Your energy bar refills faster for a while, so your next cards arrive sooner.
Tip: Play it early in a round to afford an expensive card before the finish.
Counters & answers
This card only affects you, so Shield and Reflect do not interact with it and it cannot be blocked.
Where to get it
| Chest | Copies | Chance per card roll* |
|---|---|---|
 Wood chest | ×2 | 30% |
 Gold chest | ×2 | 24% |
* Before the ×2 weight for cards you do not own yet.
Also sold as single copies in the daily shop when offered: 10 coins per common copy.
Levels
Upgrading only lowers the energy cost (4% per level, rounded, never below 1). Duration and strength are the same at every level, and each arena caps the level cards play at.
| Level | Energy cost | Copies to reach | Coins to reach |
|---|---|---|---|
| Level 1 | 2 | Unlock | — |
| Level 2 | 2 | 2 | 50 |
| Level 3 | 2 | 4 | 100 |
| Level 4 | 2 | 10 | 250 |
| Level 5 | 2 | 20 | 500 |
| Level 6 | 2 | 50 | 1,000 |
| Level 7 | 2 | 100 | 2,000 |
| Level 8 | 1 | 200 | 5,000 |