This visual dichotomy accentuates the gender-specific movesets and roles that each form can play in competitive scenarios
Flashback lets you use it twice or makes it a strong spell to self-mill
That said, it might be possible for a Dot Code bar to be scanned in upside-down and still be read properly as the Always Black/White bits are what is used to determine orientation of the code, but Im not yet prepared to cut up any of my cards just to see if it does work or not
The second came in Streets of New Capenna, on the card Ob Nixilis, the Adversary
Emrakul, the World Anew 13 Toughness Emrakul, the World Anew can be cast for as little as 6 colorless mana with a discard outlet
Then you can exile a graveyard and gain a bunch of life, ramp out two lands of any type not just basics tapped, make a pair of 2/2 Bear tokens, or toss a pair of counters on all of your stuff for the going wide, and with the Bears as a default that's two 4/4s for six mana on a naked board