Ah yes, targets; possibly one of the most frustrating aspects of Yu-Gi-Oh for a judge. At least in one sense; the sense that there are no clear cut rules on determining if a card targets or not. A judge can not always determine is a card is targeting or not based on the card's text, the only clear cut way to determine this, just by looking at a card's text, is if the card has written on it "specifically designate", "target", or "designate". The most basic rule of determining if a card has a targeting effect or not is if a card requires an opponent to announce its mark then the card is has a targeting effect. Another rule, which is always true, is that targets are announced at activation.
The most common annoyance in relationship to the topic at hand is Creature Swap. Creature Swap is not a targeting effect because Creature Swap's marks are chosen at resolution, not activation; but why? The reason is that it is an effect that requires both players to chose a monster. Creature Swap uses the word "select", this trend can be seen by looking at cards like Spear Cretin, The Shallow Grave, etc.
So the best guide I can give you for determining if a card targets is as follows. If a card requires the person who activates it to announce its mark then it is a targeting effect. Targets are chosen at activation. If a card allows or requires both players to do the same thing then that card's marks are chosen at resolution; this kind of card is usually coupled with the word "select".
So what happens when card A targets card B and card B is moved some place else before card A resolves? The simple answer is that card A resolves without effect. Some people, even judges, will use the word "disappears" or "fizzles", the correct terminology is "resolves without effect. So if I activate Monster Reborn targeting your Dark Magician of Chaos then you can chain Call of the Haunted and target that same Dark Magician of Chaos. Resolution happens in reverse order so Call of the Haunted resolves first Special Summoning Dark Magician of Chaos, then Monster Reborn resolves"¦ Dark Magician of Chaos is no longer in the graveyard so Monster Reborn resolves without effect.
This is true even for cards that do not technically target like Spear Cretin, The Shallow Grave or Creature Swap. If both players have one monster on the field and player A activates Creature Swap followed by player B chaining to creature swap with Compulsory Evacuation Device, targeting either monster, then Creature Swap would resolve without effect.
The most common annoyance in relationship to the topic at hand is Creature Swap. Creature Swap is not a targeting effect because Creature Swap's marks are chosen at resolution, not activation; but why? The reason is that it is an effect that requires both players to chose a monster. Creature Swap uses the word "select", this trend can be seen by looking at cards like Spear Cretin, The Shallow Grave, etc.
So the best guide I can give you for determining if a card targets is as follows. If a card requires the person who activates it to announce its mark then it is a targeting effect. Targets are chosen at activation. If a card allows or requires both players to do the same thing then that card's marks are chosen at resolution; this kind of card is usually coupled with the word "select".
So what happens when card A targets card B and card B is moved some place else before card A resolves? The simple answer is that card A resolves without effect. Some people, even judges, will use the word "disappears" or "fizzles", the correct terminology is "resolves without effect. So if I activate Monster Reborn targeting your Dark Magician of Chaos then you can chain Call of the Haunted and target that same Dark Magician of Chaos. Resolution happens in reverse order so Call of the Haunted resolves first Special Summoning Dark Magician of Chaos, then Monster Reborn resolves"¦ Dark Magician of Chaos is no longer in the graveyard so Monster Reborn resolves without effect.
This is true even for cards that do not technically target like Spear Cretin, The Shallow Grave or Creature Swap. If both players have one monster on the field and player A activates Creature Swap followed by player B chaining to creature swap with Compulsory Evacuation Device, targeting either monster, then Creature Swap would resolve without effect.