For example, if a Lakeside Shack and a Breeding Pool you control are entering at the same time (perhaps because of the effect of a spell like Scapeshift), your life total is 14, and your opponent's life total is 20, the Lakeside Shack will enter tapped whether or not you choose to pay life as Breeding Pool enters
If they don't answer, an opponent chooses one
Specifically, Dionus grants your Elves the ability to untap themselves when they tap themselves during your turn, be it for combat or, more commonly, mana generation
Over the last few days, loads of cards on the list were spiking in price as fans hoped to capitalize on this update
If the spell has any targets, you may choose new targets for any of the copies." As the replicate triggered ability resolves, you'll copy Shattering Spree for each time you paid its replicate cost, even if the original spell is no longer on the stack at that time (perhaps because it was countered)