With Fortisphere having met its usefulness, discarding it to draw two cards was a popular play, meaning this one Steel item would give a Sapphire/Steel player three cards over the course of the game , and it was relatively cheap to do so
Some cards, like Oyobi, Who Split the Heavens, are too inefficient for most tables, and cards like Kirtars Wrath can be actively harmful towards your game plan
Is it a combo
Plus its a pretty cool card
The only difference is a Planeswalker symbol in the lower left corner, like what you find on cards from The List in Set Boosters
Players should be free to open packs, craft cards, and purchase card styles without worrying about doing things "the right way." I get itif there's one thing Magic players love, it's learning to optimize their gameplay, but there shouldn't be an "optimal way" to bling out your deck