During an Arena match, my opponent, a Shaman, used ‘Farseer Nobundo’, which I then copied using the ‘Reverberations’ card. Later, I stored ‘Spontaneous Combustion’ in ‘The Galaxy’s Lens’ and used it.
According to the effect description of ‘Spontaneous Combustion’, it says, “Deal 4 damage to a random enemy.” However, the ‘Spontaneous Combustion’ card stored in ‘The Galaxy’s Lens’ dealt 4 damage to my hero instead of a random enemy.
This bug directly caused me to lose the Arena match. I hope this issue gets fixed soon.