Unclaimed Territory

Type: Land
Set: The List #XLN-258 (uncommon)
Price: $0.36 USD

As this land enters, choose a creature type.
{T}: Add {C}.
{T}: Add one mana of any color. Spend this mana only to cast a creature spell of the chosen type.

Unclaimed Territory has 14 printings, first in Ixalan (2017). EDHREC ranks it #250 among Commander cards. It appears most in Pantlaza, Sun-Favored decks (23,133 on EDHREC). 14 public decks on TCG run it. It has 1 official ruling.

Legality

commander: legal
legacy: legal
vintage: legal
pauper: not legal
modern: legal
pioneer: legal
standard: not legal
brawl: legal

Public decks that run Unclaimed Territory

Ahoy Mateys - The Lost Caverns of Ixalan Commander, led by Admiral Brass, Unsinkable
Avengers Assemble - Marvel Super Heroes, led by Captain America, Team Leader
Blood Rites - The Lost Caverns of Ixalan Commander, led by Clavileño, First of the Blessed
Dance of the Elements - Lorwyn Eclipsed Commander Deck, led by Ashling, the Limitless
Doom Prevails - Marvel Super Heroes, led by Doctor Doom, King of Latveria
Eldrazi Incursion - Modern Horizons 3 Commander, led by Ulalek, Fused Atrocity
Explorers of the Deep - The Lost Caverns of Ixalan Commander, led by Hakbal of the Surging Soul
Ruthless Regiment - Commander 2020, led by Jirina Kudro
Sliver Swarm - Commander Masters, led by Sliver Gravemother
Spirit Squadron - Crimson Vow Commander, led by Millicent, Restless Revenant
Tyranid Swarm - Warhammer 40,000 Commander, led by The Swarmlord
Undead Unleashed - Midnight Hunt Commander, led by Wilhelt, the Rotcleaver
Vampiric Bloodline - Crimson Vow Commander, led by Strefan, Maurer Progenitor
Veloci-Ramp-Tor - The Lost Caverns of Ixalan Commander, led by Pantlaza, Sun-Favored

Commanders that run Unclaimed Territory most

Deck counts from EDHREC.

Pantlaza, Sun-Favored: 23,133 decks
Edgar Markov: 22,702 decks
Ashling, the Limitless: 18,540 decks
Ulalek, Fused Atrocity: 18,155 decks
Hakbal of the Surging Soul: 16,808 decks
The Ur-Dragon: 14,654 decks
The First Sliver: 11,998 decks
Gishath, Sun's Avatar: 10,246 decks

Often played with Unclaimed Territory

Cards that show up in the same decks on EDHREC.

Rulings

2018-01-19: To choose a creature type, you must choose an existing creature type, such as Vampire or Knight. You can't choose multiple creature types, such as "Vampire Knight." Card types such as artifact can't be chosen, nor can subtypes that aren't creature types, such as Jace, Vehicle, or Treasure.