If the discard was something more universal like lands or blue cards instead of artifacts, or always just one card, while retaining its instant cost it would probably get more play than Fact or Fiction, mostly for occupying a slot on the curve in less demand
Perhaps, this time next year, it'll look completely different
This is a great template for the current UB meta decks, being able to play King T'Challa on your opponent's turn if you leave mana untapped and possibly even in response to them casting a spell that allows them to draw a card
This high up, we'll go strictly by Whoever gets the most bans, wins. You can play Timetwister in Vintage (even if it's restricted) and Commander, but Yawgmoth's Bargain is strictly Vintage-only and one of Magic's best black enchantments ever
The card excels in multiplayer formats where opponents constantly draw cards