There will be times where you can use that extra combat step to great effect, but there will be more when you have neither the time nor the mana, nor the board state to actually make this matter Not enough nonbasic lands in the format Giving a creature firebereathing isnt particularly useful unless that creature was also pretty good, but this does replace itself, so that makes the floor on it pretty reasonable, especially for a one mana card
In 2024 alone, Wizards released over 11,000 unique prints in paper when counting all variants and treatments
Alternative stores see a fraction of the traffic, meaning products sit on shelves longer and you have a much better chance of finding what you want
Playing a card for free and getting three mana out of it is an overwhelmingly useful tradeoff that has never been repeated since
The short answer is that theres no good reason for this card to only have a single reprint, especially at mythic rarity