The following cards work differently than their previous printings imply.
Ghost Pets
These cards now say "During either player's Battle Phase, you may discard a card from your Inventory; gain 2 Attack or 2 Defence this turn.
"Sending a card" did not count as "discarding", previously preventing this effect from triggering cards like Ghost Lupe's Sword.
Breadmaster, Lab Ray Scientist
The 2nd sentence on each of these cards now begin with "If you do". You must have at least 3 other cards in hand to use Breadmaster's search/play effect and at least 2 other cards to search with Scientist.