If most of your creatures are 1-drops and 2-drops, as is the case in many decks like Delver, wheres the restriction
The List has changed for every set containing set boosters so far and is likely to continue to do so
While artifact hate is nothing new - Shatterstorm, Fracturing Gust, Stony Silence, and many more have been legal for quite some time - there's a level of efficiency in Meltdown that makes it perhaps the best option Modern has ever had
The change will move Standard away from the two-year rotation cycle that has been used since the formats inception
This is called fizzling . Smart opponents will try to make your targets illegal before your triggers resolve
I think for a deck that embraces flooding the field with characters and bouncing would-be-banished characters back to your hand, the cards that let you heal (which are almost never useful in any trading card game) are wasted space here