bad example....

[chenw]

Ruling on the card
If your opponent Flip Summons a monster with a Flip Effect, and chains a card like "Ring of Destruction" to destroy "Fiend Skull Dragon", the Flip Effect will not be negated since "Fiend Skull Dragon" is no longer on the field when the Flip Effect resolves, and it will only negate Flip Effect "as long as this card remains face-up on the field".

Effect of Fiend Skull Dragon
This monster can only be Fusion Summoned by the above Fusion-Material Monsters. As long as this card remains face-up on the field, negate all Flip Effect Monsters' effects. In addition, negate the effects of a Trap Card that specifically designates this card as a target and destroy it.

as a side question... does FSD negate the entire effects of the flip effect monsters, such as slate warrior's second effect?

 

[Bigred Blues]

EDIT

It was just brought to my attention that Blade Knight in this situation would negate both effects of slate. FiendSkull has the simlar text to Blade Knight. So till someone asks the Judge group...I think it would negate both effects slate.

The ruling:
If "Blade Knight" destroys a Flip Effect Monster like "Slate Warrior", even that monster's non-Flip effects are negated. So in this case, "Slate Warrior" does not reduce the ATK and DEF of the "Blade Knight" that destroyed it, because "Blade Knight" negates its effect.

Texts of Blade Knight and Fiendskull

Blade Knight
Effect Monster (Warrior / LIGHT / 4 Stars / ATK 1600 / DEF 1000)
If you have 1 or less cards in your hand, the ATK of this card on the field is increased by 400 points. Also, if this card is the only monster on your side of the field, negate the effects of Flip Effect Monsters destroyed by this card as a result of battle.

Fiend Skull Dragon
Fusion Monster (Dragon / WIND / 5 Stars / ATK 2000 / DEF 1200)

"Cave Dragon" + "Lesser Fiend"
This monster can only be Fusion Summoned by the above Fusion Material Monsters. As long as this card remains face-up on the field, negate all Flip Effect Monsters' effects. In addition, negate the effects of a Trap Card that designates this card as a target and destroy it.

I guess we are waiting for clarification...

 

[densetsu_x]

In regards to the "Ring" vs. "Fiend Skull Dragon", this has already been documented in the FAQ as being a poor example.