Pioneer

Pioneer is a constructed format that allows expansion sets and core sets from Return to Ravnica forward, save for the Pioneer ban list. It is legal for tabletop Magic: The Gathering and Magic Online. Since MTG Arena has its own Historic format, it doesn't support Pioneer, but will be building up to supporting Pioneer with "Remastered" formats as time goes on.

Description
The format was introduced on October 21, 2019, and was officially codified on January 30, 2020, when it is featured on Grand Prix Brussels. StarCityGames soon after moved away from Legacy as an SCG Tour format, replacing it with Pioneer.

Deck construction
All the regular rules for constructed formats apply. Decks must contain a minimum of sixty cards. There is no maximum deck size; however, you must be able to shuffle your deck with no assistance. Like other constructed formats, a sideboard of at most fifteen cards can be used. With the exception of basic lands and cards like Rat Colony, a player's combined deck and sideboard may not contain more than four of any individual card.

Set legality
Cards from all regular core sets and expansions since Return to Ravnica (including exclusives that only appeared in Welcome Deck 2016 and Welcome Deck 2017) are legal. • Return to Ravnica

• Gatecrash

• Dragon's Maze

• Magic 2014

• Theros

• Born of the Gods

• Journey into Nyx

• Magic 2015

• Khans of Tarkir

• Fate Reforged

• Dragons of Tarkir

• Magic Origins

• Battle for Zendikar

• Oath of the Gatewatch

• Welcome Deck 2016

• Shadows over Innistrad

• Eldritch Moon

• Kaladesh

• Aether Revolt

• Welcome Deck 2017

• Amonkhet

• Hour of Devastation

• Ixalan

• Rivals of Ixalan

• Dominaria

• Core Set 2019

• Guilds of Ravnica

• Ravnica Allegiance

• War of the Spark

• Core Set 2020

• Throne of Eldraine

• Theros Beyond Death

• Ikoria: Lair of Behemoths

• Core Set 2021

• Zendikar Rising

• Kaldheim

• Strixhaven: School of Mages

Banned List
The original stated Pioneer plan was to run it on MTGO initially and ban “aggressively and off-cycle”, which meant basically whenever R&D felt like they had the justification, any day, any time. Since organizations were quickly committing to tabletop events, it was announced that banned list announcements/changes would be made on every Mondays instead of at any time. The weekly announcement was dropped on January 6, 2020, which announcements would be made (on Monday) only if changes occurred, syncing up with other constructed format.

As of February 15th, 2021 the following cards are banned in Pioneer tournaments:

• Balustrade Spy

• Bloodstained Mire

• Flooded Strand

• Felidar Guardian

• Field of the Dead

• Inverter of Truth

• Kethis, the Hidden Hand

• Leyline of Abundance</c>

• Nexus of Fate</c>

• Oko, Thief of Crowns</c>

• Once Upon a Time</c>

• Polluted Delta</c>

• Smuggler's Copter</c>

• Teferi, Time Raveler</c>

• Undercity Informer</c>

• Underworld Breach</c>

• Uro, Titan of Nature's Wrath</c>

• Veil of Summer</c>

• Walking Ballista</c>

• Wilderness Reclamation</c>

• Windswept Heath</c>

• Wooded Foothills</c>