Block Constructed
Block is a format that allows for cards of one block to be played, save any banned cards.
There are two types of Block formats: Block Constructed and Block Limited. In Block Constructed, all cards in the deck must be from the same block. Block Limited is the most common form of limited and involves either playing sealed or draft with packs from the same block (ideally one pack for each of the sets in the block).
Constructed 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. If a player wishes to use a sideboard, it must contain exactly fifteen cards.
With the exception of basic land cards, a player’s combined deck and sideboard may not contain more than four of any individual card, counted by its English card title equivalent. All cards named Plains, Island, Swamp, Mountain, and Forest are basic. (The five Ice Age snow-covered lands — Snow-Covered Plains, Snow-Covered Island, Snow-Covered Swamp, Snow-Covered Mountain, and Snow-Covered Forest — are also basic lands. Note that snow-covered lands are permitted only in formats that allow the Ice Age set to be used.)
Block Constructed formats
- Lorwyn-Shadowmoor block (Lorwyn, Morningtide, Shadowmoor)
- Effective July 25, 2008, the Eventide set will become legal in the Lorwyn-Shadowmoor Block format.
- Time Spiral block (Time Spiral, Planar Chaos, Future Sight)
- Ravnica block (Ravnica: City of Guilds, Guildpact, Dissension)
- Kamigawa block (Champions of Kamigawa, Betrayers of Kamigawa, Saviors of Kamigawa)
- Mirrodin block (Mirrodin, Darksteel, Fifth Dawn)
- Onslaught block (Onslaught, Legions, Scourge)
- Odyssey block (Odyssey, Torment, Judgment)
- Invasion block (Invasion, Planeshift, Apocalypse)
- Masques block (Mercadian Masques, Nemesis, Prophecy)
- Urza block (Urza's Saga, Urza's Legacy, Urza's Destiny)
- Tempest block (Tempest, Stronghold, Exodus)
- Mirage block (Mirage, Visions, Weatherlight)
- Ice Age block (Ice Age, Alliances, Coldsnap)
Banned cards
Mirrodin Block
- Æther Vial
- Ancient Den
- Arcbound Ravager
- Darksteel Citadel
- Disciple of the Vault
- Great Furnace
- Seat of the Synod
- Tree of Tales
- Vault of Whispers
- Skullclamp
Masques Block
Urza Block
- Gaea’s Cradle
- Memory Jar - The first and only card to have been the subject of an emergency ban.
- Serra’s Sanctum
- Time Spiral
- Tolarian Academy
- Voltaic Key
- Windfall