No, a creature dying doesn't count as discarding
As we have seen, there are plenty of modern sets which contain over 240 cards and if you only want one card from the set then it is going to be a lot cheaper to just buy the card, as opposed to a booster box which you may not even find what you are looking for
And second, Commander has a lot more inherent variance and other checks on the power the command zone offers
Exhaust , : Loot deals 3 damage to any target
In a case where you put more than one +1/+1 counter on Etched Slith with its last ability (for example, because of the effect of Doubling Season), the reflexive ability will trigger once for each +1/+1 counter you put on it this way
Its worth mentioning that the standout deck from the batch is undoubtedly Giratina VSTAR, thanks to helpful cards like Cramorant, Colresss Experiment, and Mirage Gate, which bring out the full power of Giratina VSTAR