It will trigger if the ability is of a dying creature that triggers only when that creature is put into a graveyard from anywhere, if Hushbringer is the card being put into a graveyard, or if Hushbringer leaves the battlefield at the same time as the dying creature
As such I expect this not to last despite being pretty close in many ways to a few cards that I expect to be the best of the learn spells
If your payoff is all in enchantments and your dorks mainly from non-creature cards then Leap is going to be weak
They can still be manifested , though
Ill be playing in drafts every Friday, will be working the cards into decks in Standard, Pioneer, Commander and Modern, and Ill be keeping an eye on the Magic The Gathering competitive metagame to see how these cards effect the most popular trading card game on the planet
These 1-drops then get replaced with ninjas via the nunjutsu mechanic to quickly build up and army of aggressive, strong threats