These factors are in constant flux because new cards come out all the time and shake up the meta: a more efficient removal spell, a lord that spawns an unexplored tribal deck
It works as a cog in sacrifice / Birthing Pod shenanigans, but is also perfectly acceptable as a speed bump for aggro decks, that they have to pay interest on later
In-Store (excludes US, LATAM, Europe, and Russia), At-Home, and Remote Prerelease are all available, so schedule your events today
It's a win-win: you mess up their plans and trigger all your cards that combo off discards
And Heartfire Hero feels awesome in a variety of Standard aggro decks and with Colossus Hammer in other formats #10
Some spells have text that allows you to choose the same mode more than once