Hi there! I watched your battle. It wasn't really a double attack of the wood nymph, but the result of a randomly determined move order.

What happened is that because the enemy's Wood Nymph and your Goblin Psychic have the same speed, attack type, card level, and rarity, there is no way to determine who will attack first per round. In these cases, the game will randomly select the order of attack per round.

So, while your monster attacked first in Round 8, the opponent's monster attacked first in Round 9. That's why it looked like a double attack, but it's not. It's just how move order is determined when the cards are tied.

You can read more about how move order is determined here: @splinterlands/announcing-anytime-tournaments