Spoiler warning. This page gives away the puzzle from 18 October 2025. If you have not played it yet, try it first – five guesses, and it is still there.
A dark valkyria that can place spell counters and destroy monsters.
Type: Gemini Monster
Set: Battle Pack 2: War of the Giants
CardMarket price: 0.06$
Text: This card is treated as a Normal Monster while face-up on the field or in the Graveyard. While this card is a Normal Monster on the field, you can Normal Summon it to have it become an Effect Monster with this effect.
● Once, while this card is face-up on the field: You can place 1 Spell Counter on it. This card gains 300 ATK for each Spell Counter on it. You can remove 1 Spell Counter from this card, then target 1 monster on the field; destroy that target.