The first cares about creatures entering during combat, which isnt exactly a common occurrence in most games
After Ether's ability resolves, the next instant or sorcery spell you cast that turn will be copied whether or not it has targets and whether or not you spent the mana added by Ether's ability on that spell
The spell will be put into its owner's graveyard and you won't get to cast it again on your next turn
These officially licensed Disney Lorcana card sleeves (Ursula's Return) protect your More Warning: Caution
If this spell was cast from your hand, create a 0/1 black Wizard creature token with "Whenever you cast a noncreature spell, this token deals 1 damage to each opponent." Rebound (If you cast this spell from your hand, exile it as it resolves
If an effect tells you to flip multiple coins at once and you haven't flipped one or more coins already during that turn, Edgar's last ability modifies that set of flips