If a card is so broken that it made people quit attending competitive tournaments, it seems obscene to have no restrictions on it in a format full of casual and preconstructed decks
Well, you probably can't recreate the entire Enchanting Tales set
Thats possibly effective in regular playing card identification, like done here, but it seems that MTG cards have too similar features to be reliably identified in this way
If you do, put this card into your hand as it resolves.) Fanning the Flames deals X damage to any target
Market research showed that hybrid mana was the highest-rated thing in the original Ravnica block, and I believe it is still one of the highest-rated "mechanics" (it's a tool, not a mechanic, but that's what the market research called it), if not the highest, of all time
Aside from that, there are plenty of artifacts that can be used alongside this card in competitive decks