If you have access to a lot of mana, you can have really explosive turns with lots of Slivers going out against every opponent at the table
Noxious Revival (SPG) $29.99 Free spells are always worth looking at, but Noxious Revival isnt the most broken of these
The ward cost is harsh and amass for every opponent's spell really adds up
That's why Upheaval is such a bomb: there are virtually no ways to deal with it, and once it is cast you can end up with two to three creatures plus a land on the board while your opponent literally has nothing, and has a hand full of sixteen cards they need to discard down to seven
Whether you're a new player or a longtime fan, theres never been a better time to join the MTG community
But if time is the limited resource that is spent flipping sieges, players will probably prefer a more meaningful threat to reward them for that effort and hopefully end the game sooner