Id probably keep this hand, and then with the pre-game scry look for any mana source, and ship anything else to the bottom
But upon the reveal of these playtest cards, I saw two in particular that captured my attention: Slivdrazi Monstrosity and Sliv-Mizzet, Hivemind
If an effect says to set a player's life total to a number that's higher than their current life total while they're affected by Screaming Nemesis's last ability, their life total won't change
Why is a card I saw on another spoiler site not here yet
and if you do the latter, and the creature its targeting dies, then Nyxborn Unicorn stays on the battlefield as a creature
Even if youre just a collector, having the opportunity to add some free packs or sniping that rare Celebi ex card without using your hard-earned Pack Points is a great way to start the year