The Board — Riftbound Rules

Section 107 — 26 rules

107.1.
Bases
107.1.a.
Each player has their own Base.
107.1.b.
Each Base is a Location. See rule 197. Locations for more information.
107.1.c.
Permanents and Runes controlled by a player reside in that player's Base.
107.1.c.1.
Permanents attached to Permanents controlled by a player may also be found in that player’s Base, regardless of their controller.
107.1.d.
Permanents and Runes in Bases are Public Information.
107.2.
Battlefield Zone
107.2.a.
The Battlefield Zone houses multiple Battlefields.
107.2.b.
Each Battlefield is individually a Location. See rule 197. Locations for more information.
107.2.c.
Battlefields and permanents at Battlefields are Public Information.
107.3.
Facedown Zones
107.3.a.
Each Battlefield is associated with a sub-zone called a Facedown Zone, a single logical space that a card can be put facedown in through various Game Effects.
107.3.b.
Each Facedown Zone has a maximum occupancy of one card.
107.3.b.1.
The maximum occupancy of a Facedown Zone can increase or decrease.
107.3.b.2.
If the maximum occupancy of a Facedown Zone decreases to a number less than the number of cards currently located there, the controller of that Facedown Zone must put a number of cards equal to the difference in the trash from the Facedown Zone.
107.3.c.
Cards can only be placed in or occupy the Facedown Zone if the controller of the card also controls the associated Battlefield.
107.3.d.
If a player loses Control of a Battlefield, any cards in the Facedown Zone associated with that Battlefield are removed during the next Cleanup. See rule 318. Cleanups for more information. See rule 421. Hide for more information.
107.3.e.
Facedown Zones are not locations.
107.3.f.
Facedown Zones are Public Zones, though facedown cards located there are Private.
107.4.
Legend Zone
107.4.a.
The space for each player's Champion Legend.
107.4.b.
This is not a location.
107.4.c.
The Champion Legend here is a Game Object. See rule 119. Game Objects for more information.
107.4.d.
The Champion Legend cannot be removed, moved, or displaced from this zone.
107.4.d.1.
Some effects may add a legend card or token to the Legend Zone. These legends are not Champion Legends.
107.4.d.2.
Non-Champion legends may be removed from the Legend Zone. They cannot exist in any zone other than the Legend Zone or Banishment.

Related FAQ (2)

Do I put my Chosen Champion back in the Champion Zone when it leaves the board?

No. Once you play a Champion from your Champion Zone, it acts like any other card from your Main Deck. When it dies, it goes to the Trash.

What happens if I play Atakhan from my deck with Rek'Sai, Breacher on the board? Can I pay the Accelerate cost and kill Rek'Sai for the Atakhan additional cost? Will it enter ready?

Yes, Atakhan enters ready. Accelerate creates a delayed replacement effect that causes Atakhan to enter ready. Although he lacks the Accelerate keyword when he resolves, he still has the delayed replacement effect that Accelerate generates.