Talk:Silhouette Joe, "Illusion Shadow Dragons"/@comment-27583494-20160508225159/@comment-26290163-20160509014119

It's a very good question because Bushiroad uses specific text to let players know when the soul would be lost and when it would stay during a call.

As you will note with this card and others like it that use the phrase "Put this card on top of", once the call cost is paid, and before it even enters the field, the card that is on the field is already considered a part of the new card being called on top of it.

This is why an opponent cannot use a [Counter] like Magical Goodbye, Oops!, etc, that returns the card which is already on the field to the owners hand. The card already on the field is no longer a target as it is now a part of the newly called Monster.

In those situations, assuming the call was from hand, the opponent must target the Monster which is being called with a negate. If they do so, both the card on the field, along with any soul it may have, and the new card are sent to the drop as they are considered one card, hence the Jackknife Vs. Begone matchup.

However, if a card that you are calling says that you may place "X" amount of cards from the field into it's soul like Martial Artist, Osumi, if you try to place a card on the field which already has soul underneath it under the new card, the soul from the previous card goes to the drop as it is not considered a part of the called card when the cost is paid. In those situations, the cards already on the field are also targets for any [Counter], as well as the card being called.