Rules Tip of the Day: Magic Acronym - LIFO: It stands for Last In, First Out and is used to described how objects on the stack resolve. The top item—the last one placed on the stack—will resolve first.

Q: If I Donate Colfenor's Plans to my opponent, can that opponent look at and play those cards?

A: Yes. Colfenor's Plans has four different abilities: the first is a triggered ability and the other three are static. When Colfenor's Plans comes into play, the first ability will trigger and remove the top seven cards from the library of the player who controlled the Plans when it came into play. This first ability is not altered at all if Colfenor's Plans changes controllers. However, Colfenor's Plans' three static abilities apply to the current controller of Colfenor's Plans; it does not matter who played it as a spell or who initially controlled it when it came into play. This means that after you Donate the Plans to another player, that player will be the one who can play the cards that have been removed from the game. It also means that they skip their draw step and can only play one spell per turn.

Q: When I Champion a tapped creature, does that creature come back into play tapped or untapped?

A: It will come back into play as a new creature with no connection to the creature that left play previously. This means that in most cases, it will come into play untapped. But something like Scarwood Treefolk would return to play tapped even if it was untapped when it left play.

Q: What happens when you have four copies of Guile in play and you counter a spell? Can you play it without paying its mana cost four times, or only one?

A: You'll only be able to play this countered spell once. The end result is the same as if you only had one Guile in play. Having multiple Guiles in play does not create a cumulative effect. Each Guile's static ability creates a replacement effect. When you counter a spell, the replacement effects from each of these abilities will try to change what happens. However, you apply replacement effects one at a time. After the first is applied, the other replacement effect will not be applicable any longer and do nothing.

Q: When my opponent plays Wren's Run Packmaster and I use an instant to destroy the creature he was going to champion, would the Packmaster get sacrificed as well, or will it still come into play? Or will I need to destroy the creature before he casts Packmaster?

A: I'm a little unclear by what you are describing here. Removing an appropriate creature from the game is not an additional cost associated with playing the Champion spell; it is something that happens when the Champion triggered ability resolves. After your opponent plays this Champion creature spell and both of you pass priority, it will come into play and its Champion ability will trigger. When this triggered ability resolves, your opponent will choose an Elf to remove from the game; if he does not, he will have to sacrifice the Packmaster. You cannot respond to this choice, as it happens when this ability resolves. However, if he only controls one Elf, then you can destroy it any time before the Champion ability resolves. If you do, then there is nothing for him to Champion, in which case he will have to sacrifice the Packmaster.

Q: If I manage to change Ith, High Arcanist's creature type to Merfolk, can I attack with it and play its ability on itself over and over again during the same combat phase to gain an absurd amount of life with Judge of Currents? Or once I play the ability the first time, is the creature removed from combat?

A: That does work, because Ith's ability does not remove the targeted creature from combat, it just untaps it and prevents all combat damage that it would deal or would be dealt. You tap Ith when you activate its ability. When this ability resolves, you will untap the targeted creature. If you target Ith with this ability, then Ith will untap again. There is nothing to prevent you from playing this ability again to repeat the process. In a sanctioned tournament, all you need to do is demonstrate that this is a repeatable loop and then choose a number of times to have this loop performed.

Q: If I play Rule of Law and have Amrou Scout in play, does it count for my spell during the turn if I use the Armrou Scout's ability to search for a Rebel and put it into play?

A: No. Amrou Scout's ability is just that, an ability. Playing this ability is not playing a spell.

Q: I have eight green mana in my mana pool and a Skyshroud Elf in play, and I want to play Razia, Boros Archangel. After I use one green mana to make a red mana, my opponent plays Shock, targeting the Elf. Can I still generate red and white mana in order to play Razia?

A: Both of Skyshroud Elf's abilities are mana abilities that do not use the stack and cannot be responded to. Your opponent will not even receive priority until you 'convert' all the mana you want to with that ability. In fact, you can use that ability during the announcement of the Razia spell, if you want.

Q: I resolved a Yawgmoth's Will. When I play Brainstorm, can I use the cards in my graveyard for the "...then put two cards from your hand on top of your library" instruction?

A: No, those cards are not in your hand. There is an effect that allows you to play them, but that does not cause them to change zones or act as if they have.