How youre going to use Doomsday varies with the format (Cube, Vintage, EDH), but youll usually want a card like Laboratory Maniac or Thassa's Oracle and draw spells like Gush or Gitaxian Probe
For 2 black mana, proliferate
Disney fans have been lured to the game thanks to gorgeous artwork, and TCG players (new or experienced) have discovered that Lorcana has innovative, straightforward mechanics and is easy to learn and play
I imagine there have been countless people who didnt read the card close enough, tried to play this thing on curve, and then had to be escorted out of the tournament for having an epic rage meltdown
We were missing a mana sink and graveyard mechanic, and, well flashback certainly fit the bill