Late-game, when everyone is looking to close out the game, then it seems fine
Marchesa, the Black Rose : When I build Marchesa decks, I use plenty of creatures that naturally enter the battlefield with +1/+1 counters, which means that, with Marchesa, the Black Rose on the battlefield, we can feed one to emerge without going down a card
But a decade later, Wizards would print Protean Hulk, which turned Flash into a Turn 1 win thanks to a convoluted loop of creatures that you can tutor up by using Flash to not just cheat the Protean Hulk into play but immediately sacrifice it, which was oddly an upside due to Protean Hulk's death trigger
It plays best with cards like Anikthea, Hand of Erebos and Starfield of Nyx that want enchantments in your graveyard
You can do this to draw a card after your mana is set or in response to the massive recursion and graveyard (ab)use at the Commander table
One possibility is to cast Apocalypse, a card that gets rid of everything, including your hand, leaving you only with Barren Glory, but that needs to be done on your upkeep, so there are options like Leyline of Anticipation or Emergence Zone to give these spells flash