Hooray, Guilds of Ravnica is here to save us.
Multicolored mana means all sorts of wonderful midrange piles can exist.
And the rotation nuked the best red cards from orbit.
Goblin Chainwhirler might even be a niche card that has a minor impact on the format.
Today I get to be the fun police, which may be one of my favorite jobs.
It is very likely, if not almost assured, that Goblin Chainwhirler is still very playable in Guilds of Ravnica Standard. If anything the format is actually structured to make it even easier for it to be one of the best cards.