Grasp of the Hieromancer doesn't work with Swift Reckoning

Rootbreaker

Grasp says it disables the creature, and swift reckoning destroys disabled creatures. They should work together.

Unknown

I don't have access to the cards right now but before the update I remember hieromancer only disabled defenders. Did you try it in a defender?

Rootbreaker

Oh, you're right. If you look at the card during a game, you can't see that last line with the restriction, but it is visible in the inventory and planeswalker screens.

alextfish

You can scroll the text of cards in-game. It might not be obvious you need to, though.