Notice the smaller font in the type line, and the slightly smaller droplet in the blue mana symbols
Scan 2019202542 625 KB Scan 2119202542 683 KB Really cool informationals on the TCG, the anime, the first movie (which hadnt come out yet) etc
You can imagine that the copy is created once the creature is on the battlefield and becomes prepared, and is exiled if the creature leaves the battlefield or once it resolves
Yuriko decks might consider it for its high mana value, and life gain strategies could potentially leverage the Access Maze side effectively
But Arena launches with a pre-existing audience of roughly everyone who's picked up a card pack in the last 26 years, plus everyone who's ever looked on with interest before deciding "Blimey, that's a commitment"
The cost to draw a card each turn is reasonable, and if we add an Aura to unflip it, such as Crab Umbra , we can use this effect more than once per turn late game