FAQ
If I activate this [Main] effect, trash 1 [Ice Oni] from my hand, and place 1 Character with a cost of 4 or less at the bottom of the owner's deck, can I choose not to play an [Ice Oni]?
No, you cannot.
Can I use this [Main] effect to place my own Character with a cost of 4 or less at the bottom of my deck?
Yes, you can.
Can I activate this [Main] effect and trash 1 [Ice Oni] from my hand or play 1 [Ice Oni] from my trash without placing 1 Character with a cost of 4 or less at the bottom of the owner's deck?
No, you cannot.