When equipped, its essentially a Vizier of the Menagerie effect on an artifact
Seventeen Ally decks were even desperate enough to turn to Yarok, the DesecratedYarok, the Desecrated at the helm, which shows how hard-up Ally decks were for PanharmoniconPanharmonicon effects
In Modern, building with Concealing Curtains gets a bit trickier, but if you want to avoid the Rakdos trap of losing to Sanctifier en-Vec, I can see Concealing Curtains as a one-drop of choice for an Esper or Sultai Lurrus deck
Once it resolves, it will remain in effect until the game ends, Ride the Shoopuf's leaves the battlefield, or some subsequent effect changes its characteristics, whichever comes first
The Auto-Reload Dice Tower Rossero 24.8 k 11.9 k Dice Hapik.cz 19.8 k 3.1 k Mechanical Dice StatusSymbol 57.1 k 19 k Dice Tower Castle Stairs squinn 18.2 k 5.2 k