Sure, its dead to something like AbradeAbrade, but that's much less common than people trying to spot remove smaller creatures
The obvious way to use this legendary blue planeswalker is to plot spells until you can activate Jaces -6 loyalty ability, then have a huge turn when you cast everything and copy all your spells
Within every player is at least a little Johnny
Ultimately, Ive found steel to be fairly metagame dependent working well as a supporting ink, but tends to fall flat in the starring role
This is the staying power card of the Naya Runes deck, allowing them to come back even if their first attempt at going off is stunted
One of the main reasons for this is the keyword Exert, which most often is used as an option when attacking to give your creature additional power/toughness or forms of evasion at the cost of not untapping the following turn