A topic from AEG's L5R CCG Rules forum, copied for Oracle of the Void from a copy of the forum saved in October 2015, so pages it didn't save are missing. Players' names are left out; the rules officials are named. Rulings are as they stood on these dates; later rulings, the rulebooks and the Rules Archive may differ.
A player, 20 February 2008
Devious Explorer Text Reaction : After you announce a Battle action: Target an enemy Personality. Your action's effects that move him home cannot be negated. He cannot gain Force bonuses or move to battlefields this turn.
Question: Is this possible that Devious Explorer could be affective against the following:
ChagataiOther players' actions cannot move Unicorn Clan Personalities in Chagatai's army.
Battle : Even if Chagatai is bowed or has been in a battle resolution this turn: Move him to the current battlefield. If he is now opposed, straighten him.
Winter WarfareText Winter
Until the beginning of your second Events Phase from now, Terrains can not be played, and actions can not move units to or from battlefields.
Blanketed ForestWinter Terrain Battle : The snow blocks travel, negating units' movement to or from this battlefield.
The khan's GambitWinter Terrain Battle : Your Personalities have +1F and cannot move home. You cannot use abilities on your cards at this battlefield.
Preparing StockpilesRecon Limited : Target one of your Scouts: Target a province. Other player's card effects can not move your Personalities home from that province's battlefield.
which all have have the ability "can not be moved home"
Seeking for your great minds on this matter thank you.
Martin Lund (rules official), 20 February 2008
Devious Explorer Text Reaction : After you announce a Battle action: Target an enemy Personality. Your action's effects that move him home cannot be negated. He cannot gain Force bonuses or move to battlefields this turn.
Question: Is this possible that Devious Explorer could be affective against the following:
ChagataiOther players' actions cannot move Unicorn Clan Personalities in Chagatai's army.
Battle : Even if Chagatai is bowed or has been in a battle resolution this turn: Move him to the current battlefield. If he is now opposed, straighten him.
Winter WarfareText Winter
Until the beginning of your second Events Phase from now, Terrains can not be played, and actions can not move units to or from battlefields.
Blanketed ForestWinter Terrain Battle : The snow blocks travel, negating units' movement to or from this battlefield.
The khan's GambitWinter Terrain Battle : Your Personalities have +1F and cannot move home. You cannot use abilities on your cards at this battlefield.
Preparing StockpilesRecon Limited : Target one of your Scouts: Target a province. Other player's card effects can not move your Personalities home from that province's battlefield.
which all have have the ability "can not be moved home"
Seeking for your great minds on this matter thank you.
Devious Explorer will normally trump all of the above examples.
When you have an effect that says "move someone home" then when you hit an effect that says, "this Personality can not be moved home," the movement effect is Negated.
When you have an effect that says, "Move someone home. This can not be Negated," then when you hit an effect that says "this Personality can not be moved home," the move effect resolves normally.
This is not true, however, when you hit a GAME RULE (something in the Rulebook other than the effects of an ability) that says you can not do something, rather than just a card effect.