If they had no cards in hand, or only one or two other cards, then theyre either guaranteed to discard the character you bounced back, or are getting rid or something equally valuable to them
If you have a Commander with a brutal attack trigger, giving your threat Indestructible along with a weak creature on your opponents side, then blowing up everything else can be a huge swing in your favor
In the rare case where enough -1/-1 counters are put on Aerith Gainsborough at the same time to make its toughness 0 or less, the number of +1/+1 counters on it before it got those -1/-1 counters will be used to determine the value of X in Aerith Gainsborough's third ability
Thanks for sticking with me
The effects of multiple Nyxbloom Ancients are cumulative
When using the Shift 5 ability, which allows the six-cost card to be played one turn early if a cheaper Merlin can be commandeered for the cause, Merlin gets to make use of another feature called Overdeveloped Brain