Ian Duke is a developer in Magic R&D and has been with Wizards of the Coast since 2012. A gift of an Ice Age starter deck in 1995 sparked Ian's lifelong passion for Magic. He also enjoys math, physics, board games, and puzzles. To the surprise of few, his favorite guild is Azorius.

Announcement Date: January 21, 2019

Modern:

Krark-Clan Ironworks is banned.

Effective Date: January 25, 2019

Magic Online Effective Date: January 21, 2019 (see below)

The list of all banned and restricted cards, by format, is here.

Next B&R Announcement: March 11, 2019

Modern

Nearly one year since the last change to the Modern banned list, R&D has continued to monitor the evolution and health of the format. During this time period, Krark-Clan Ironworks decks have risen to prominence at the Grand Prix level of play, posting more individual-play Modern Grand Prix Top 8 finishes than any other archetype, despite being only a modest portion of the field. In fact, only one other archetype, White-Blue Control, has posted more than half as many Top 8 finishes as Ironworks in those events. With no signs of the Ironworks deck's dominance at the GP level slowing down, we've decided to take action by banning the card Krark-Clan Ironworks.

In many ways, this was not a clear-cut discussion, and R&D considered data over an extended period of time before coming to a decision. Ironworks decks require detailed rules knowledge and careful practice to master, resulting in a high win rate among pro players and other experienced pilots at the highest levels of play. In contrast, for quite some time, we hadn't seen Ironworks be as popular or as winning in less competitive play environments. With Ironworks's interactions being difficult to execute on Magic Online, it's been more challenging to gather data reflective of its win rate in the hands of a practiced pilot in tabletop play.

With these challenges in mind, we've taken additional time to watch the environment evolve. By now, we've gathered sufficient data to conclude that Ironworks poses a long-term threat to the health of competitive Modern play. This is the right time to make a change. While the primary reasons for banning a card from the Ironworks deck are its raw win rate and high GP Top 8 conversion rate, we also considered its highly polarized Game 1 (pre-sideboard) win rate, sometimes long turn length, and difficult rules interactions as secondary factors.

Games with Krark-Clan Ironworks can often involve excessively arcane rules interactions using mana ability timing windows, the understanding of which are necessary for players to agree on the game state. This can create a barrier to entry to Modern for players playing against the deck and to those who would feel obligated to play with it because of its strong win rate. We're sensitive to community feedback that the combination of polarized matchups, complex interactions, and long turns can lead to unenjoyable gameplay and viewing experiences.

Make no mistake—R&D wholeheartedly embraces the strategic depth and robust rules system of Magic, and the player skill it takes to master them. In many cases, a deck's difficulty to play is a pressure against needing to ban a card, insofar as it suppresses the metagame population and win rate of the deck in the short term. This a major factor as to why R&D had not previously needed to take steps against Ironworks. As time goes on and more players master the deck, we ultimately have to make decisions based on how the deck is performing in the hands of those experts in practice.

I'd like to emphasize that, while Ironworks did perform well at the recent Grand Prix Oakland, we do not make B&R decisions based on a single tournament alone. It's the long-term performance of Ironworks over the last year that has given us cause for action. Grand Prix Oakland results reflect that this trend is not slowing down as the metagame adjusts.

We considered three possible cards from Ironworks to ban: Ancient Stirrings, Mox Opal, and Krark-Clan Ironworks itself. Given that Modern has looked healthy and diverse at many levels of play outside of Ironworks's dominance at the Grand Prix level, we decided to target the card that only affects the Ironworks deck: Krark-Clan Ironworks.

Rate Card n. cards that cost less mana than you would expect to pay for a particular creature or effect, such as a 6/6 creature for four mana

Ancient Stirrings and Mox Opal represent two categories of cards that R&D keeps a careful eye on: card selection and fast mana. One factor we consider is that Ancient Stirrings, unlike more general card selection spells like Ponder and Preordain, brings deckbuilding restrictions. When we examine the effect of powerful cards, we consider whether they are increasing or decreasing the number of viable decks in the environment. In the current state of the metagame, the build-around nature of Ancient Stirrings supports decks that look very different from a simple collection of the strongest rate cards, and that otherwise may not exist. The recent resurgence of a new generation of Amulet Titan decks is a good example of this. Mox Opal is a similar case. In addition to showing up in high-profile decks like Hardened Scales, we also see Mox Opal enabling a variety of more fringe artifact synergy decks. As a category, we think these are generally healthy provided they appear in small doses and have reasonable win rates. As Modern stands, our metagame data does not indicate a need to impact the other Ancient Stirrings or Mox Opal decks.

Bear in mind that this is based on the current state of the metagame, and that Ancient Stirrings and Mox Opal are not being given a free pass in perpetuity. While we have no current plans to take action against these two cards, we'll continue to monitor the health of the environment and the strength of decks that use them. If the metagame reaches a point where we determine these cards are doing more to suppress archetype diversity than enable it, we will certainly revisit this discussion. At this time, we're choosing the surgical ban against Krark-Clan Ironworks itself and avoiding "splash damage" against other archetypes.

A Note on Pauper

We've heard some recent discussion amongst the Pauper community about the potentially problematic interaction between Gush and Foil, the latter of which was recently added to the environment through Ultimate Masters. While our metagame data indicates that taking action at this time would be premature, we'll watch the format as decks adjust to play with and against this combination. We appreciate continued community feedback on this topic through discussion on forums, in articles, and on social media.

A Note on Magic Online

With today's announcement, Magic Online will debut a new system to handle card bans while the system is live. At 10 a.m. PT today, Krark-Clan Ironworks will be banned on Magic Online while the system is live. This neither requires a downtime where players are removed from Magic Online while we make a ban list change, nor a system where we need to prematurely end the League and create a new version.

Players who have the card in their decks will be automatically removed from any Leagues they are participating in and their entries will be reimbursed. Prizes earned at the point of removal will be granted manually, though the results of any active League matches at that time will not count.

Players who are waiting in a queue for a tournament to begin will be removed from that queue and will have their entry reimbursed. Players participating in a non-League tournament that is already underway will not be affected and may finish the event normally.

This new system lets us make changes as soon as possible while only impacting players who are using banned cards.

In addition to the announced ban, Hada Freeblade, Spatial Contortion, and Circle of Flame will be banned in Pauper to correct a format issue where they are currently legal in the format despite only appearing at common as promotional cards. These bans will use the same process outlined above.