from UDE's Judge Certification Program (YGO)
Q:
A player has a Marshamallon on the field that was special summoned. He uses Book of Moon to flip it face down.
If Fossil dyna Pachycephalo is flipped face up, is the Marshmallon destroyed? Is it like Ohka, who when flipped face down "will not reset their memory of how they were Summoned." Or does the Marshamallon completely reset?
I'm assuming that any Nimbles that were special summoned face-down would also be destroyed by Fossil Dyna?
A:
Any monster that was placed onto the field by a Special Summon will be destroyed by "Fossil Dyna Pachycephalo's" effect, even if the monster is face-down.
Flipping a monster face-down doesn't make it forget that it was Special Summoned onto the field.
The "Marshmallon" and the "Nimble Momongas" would be destroyed.
http://entertainment.upperdeck.com/community/forums/thread/1384303.aspx
Q:
A player has a Marshamallon on the field that was special summoned. He uses Book of Moon to flip it face down.
If Fossil dyna Pachycephalo is flipped face up, is the Marshmallon destroyed? Is it like Ohka, who when flipped face down "will not reset their memory of how they were Summoned." Or does the Marshamallon completely reset?
I'm assuming that any Nimbles that were special summoned face-down would also be destroyed by Fossil Dyna?
A:
Any monster that was placed onto the field by a Special Summon will be destroyed by "Fossil Dyna Pachycephalo's" effect, even if the monster is face-down.
Flipping a monster face-down doesn't make it forget that it was Special Summoned onto the field.
The "Marshmallon" and the "Nimble Momongas" would be destroyed.
http://entertainment.upperdeck.com/community/forums/thread/1384303.aspx