If you do mill someone out, youll statistically be laughing anyway, because its the most evil and also the most entertaining way to win a game of MTG
Since it's a mana cheap instant, you can do this in response to targeted or sweeping removal to get cards, as a sacrifice or it can send something to your graveyard about to get exiled by Swords to Plowshares, or to get value out of a chump blocker about to die anyway

#668454 Subgrades Surface Centering Edges Corners Grade MINT Population With Label 117 Population 147 Population higher 103 Total Submitted 367 Gem rate 28% Card Details Card Details Label Ace Name Mewtwo EX Release Year 2016 Set Evolutions Number 103/108 Language English Variant Full Art Population Highlights 117 147 103 Total Submitted 367 Population Data All Labels All Labels Standard Colour Match Ace Number of certs Authentic 0 Certs Grade 1 2 Certs 0.5% Grade 2 0 Certs 0% Grade 3 1 Cert 0.3% Grade 4 1 Cert 0.3% Grade 5 2 Certs 0.5% Grade 6 13 Certs 3.5% Grade 7 29 Certs 7.9% Grade 8 69 Certs 18.8% Grade 9 147 Certs 40.1% Grade 10 103 Certs 28.1% Grade Label Population Same Grade 14 Standard 16 Colour Match 117 Ace All Grades 43 Standard 27 Colour Match 297 Ace How did we define your grade
The damage is broken up in very uneven amounts, though, which adds volatility
I actually may have a copy on the way through @cryingatnight already, but the card is the Galarian Slowking Alt Art
If the die landed on the chaos symbol, however, a special condition on the card would activate, affecting the game for every player involved