Q
With effects like Kitte-men • Inc-neko (Seigi)
and The last dance at the ball (SHADE)
, can I choose not to pick a card, so the effect doesn't take effect, when there are cards in the abyss or power charger it could choose?
A
No. For "choose up to ○" and "choose ○", you must choose when there are valid targets.
Where you can choose how many, always choose at least 1. (With The last dance at the ball (SHADE), choose 1 or 2.)
If there are no valid targets, finish resolving without choosing. If the rest of the effect can't take effect without a target, it finishes resolving without taking effect.