10/1/2009: The ability counts the number of allies you control as it resolves.
10/1/2009: You target a creature when the ability triggers. You decide whether to have Tajuru Archer deal damage to that creature as the ability resolves.
10/1/2009: Terra Stomper can be targeted by spells that try to counter it (such as Cancel). Those spells will resolve, but the part of their effect that would counter Terra Stomper won't do anything. Any other effects those spells have will work as normal.
10/1/2009: As you play a land, announce whether it's your normal land play for the turn or you're playing it as the result of Oracle of Mul Daya's first ability (or another such effect that exists).
10/1/2009: If you control more than one Oracle of Mul Daya, the effects of their first abilities are cumulative. If you control two, for example, you can play three lands on your turn.
10/1/2009: When playing with the top card of your library revealed, if an effect tells you to draw several cards, reveal each one before you draw it.
10/1/2009: If the top card of your library changes during the process of casting a spell or activating an ability, the new top card won't be revealed until the process of casting the spell or activating the ability ends (all targets are chosen, all costs are paid, and so on).
10/1/2009: Oracle of Mul Daya doesn't change the times when you can play a land card from the top of your library. You can play a land only during your main phase when you have priority and the stack is empty. Doing so counts as one of your land plays for the turn (either your normal one, the additional one Oracle of Mul Daya grants you, or an additional one from some other effect).
10/1/2009: If you play your first land of the turn from the top of your library, and the new top card is another land card, you can play that one too.
10/1/2009: Oracle of Mul Daya doesn't allow you to activate the activated abilities (such as cycling) of a land card on top of your library.
10/1/2009: The controller of the enchanted creature may activate the ability, not the controller of Predatory Urge.
10/1/2009: If the enchanted creature's ability is activated, that creature is the one that will deal and be dealt damage when the ability resolves. It doesn't matter if Predatory Urge leaves the battlefield or somehow becomes attached to another creature by that time.
10/1/2009: If the targeted creature leaves the battlefield (or otherwise becomes an illegal target) before the ability resolves, the ability is countered. The enchanted creature isn't dealt damage.
10/1/2009: On the other hand, if the enchanted creature leaves the battlefield before the ability resolves, the ability continues to resolve. The enchanted creature deals damage to the targeted creature equal to the power the enchanted creature had as it last existed on the battlefield.
10/1/2009: You may have the enchanted creature target itself with its own ability. If you do, it will deal damage to itself equal to its power, then immediately do it again.
10/1/2009: The landfall ability triggers whenever a land enters the battlefield under your control for any reason. It triggers whenever you play a land, as well as whenever a spell or ability (such as Rampant Growth) causes you to put a land onto the battlefield under your control. It will even trigger when a spell or ability causes another player to put a land onto the battlefield under your control (as can happen with Yavimaya Dryad's ability, for example).
10/1/2009: When a land enters the battlefield under your control, each landfall ability of the permanents you control will trigger. You can put them on the stack in any order. The last ability you put on the stack will be the first one that resolves.