I think the biggest problem with this deck is the timing
The other option is to take advantage of the direct damage, which is good in its own right to either finish off a damaged character or get them within range to be banished but also works with the likes of cards that benefit from being damaged - such as Scroop, Backstabber - that benefit from healing damage, like Rapunzel, Gifted Artist, or from damage being dealt: like Beast, Relentless.
The official description for Steel reads: Steel glimmers are strong
Other effects can still modify enchanted creature's power and/or toughness as they would any other creature, and their durations are not affected
, , Sacrifice this land: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle