Improved Technique (GD03-109) Holofoil - Steel Requiem

[Burst] Activate this card's [Main] .
[Main] / [Action] Choose 1 enemy Unit that is Lv.4 or lower. Deal 3 damage to it. If there are 2 or more cards with "Improved Technique" in their card name in your trash, choose 1 enemy Unit instead.