This 4/5 for three with Reach and no other downsides (aside from its GGG mana value) is an absolute monster in its own right
Just like the previous banned Jynx card, this was a simple change of the colour of Jynx's face, likely to remove any association with a race based on dark skin
Plus, red decks have plenty of ways to give it haste, so you can escape it, drain 3, attack for 6, and drain 3 more to deal 12 damage total
Bear in mind that if you aren't winning with the mill combo and your deck is getting thiner, you might need Elixir of Immortality to be able to win on one of the infinite draw combos
CourtyardMagic: The Gathering Streets of New Capenna - Collector Booster (1 Booster Pack - Art May Vary)
If you are mostly in red, a Volcanic Island here and a Rakdos Signet there will set you up to take that third-pack Time Walk or Mind Twist with reasonable confidence that you can cast it