This will likely be resolved by someone simply tossing a removal spell at Hushbringer since it dies to a gentle breeze, but should it stick around a while and shut down a player at your table, they may opt for player removal instead
If it was +1/0, it would be terrible, but its not
4 Solitary Confinement Lonely, But Safe Solitary Confinement is a very tricky enchantment, so tricky in fact that you should probably avoid putting it in most decks
Add in a Goblin Bombardment or an Elas il-Kor, Sadistic Pilgrim and watch as nobody gets to have lives anymore, either
These were designed for newer players, and composed exclusively of reprints, but were sold at a lower price point to account for this
In Magic terms, Steel is another ink that takes some elements of Green with a side of Blacks control