M:tG card similarity search
3R · Enchantment
At the beginning of each upkeep, count the number of permanents. If the number is odd, until end of turn, red creatures get +1/+1 and whenever a player taps a Mountain for mana, that player adds an additional {R}. If the number is even, until end of turn, red creatures get -1/-1 and if a player taps a Mountain for mana, that Mountain produces colorless mana instead of any other type.
| Name | Mana | Type | Text |
|---|---|---|---|
| Luxury Suite | Land | Luxury Suite enters the battlefield tapped unless you have two or more opponents. {T}: Add {B} or {R}. | |
| Morphic Pool | Land | Morphic Pool enters the battlefield tapped unless you have two or more opponents. {T}: Add {U} or {B}. | |
| Rejuvenating Springs | Land | Rejuvenating Springs enters the battlefield tapped unless you have two or more opponents. {T}: Add {G} or {U}. | |
| Sea of Clouds | Land | Sea of Clouds enters the battlefield tapped unless you have two or more opponents. {T}: Add {W} or {U}. | |
| Spectator Seating | Land | Spectator Seating enters the battlefield tapped unless you have two or more opponents. {T}: Add {R} or {W}. | |
| Spire Garden | Land | Spire Garden enters the battlefield tapped unless you have two or more opponents. {T}: Add {R} or {G}. | |
| Training Center | Land | Training Center enters the battlefield tapped unless you have two or more opponents. {T}: Add {U} or {R}. | |
| Undergrowth Stadium | Land | Undergrowth Stadium enters the battlefield tapped unless you have two or more opponents. {T}: Add {B} or {G}. | |
| Vault of Champions | Land | Vault of Champions enters the battlefield tapped unless you have two or more opponents. {T}: Add {W} or {B}. | |
| Warhorn Blast | 4W | Instant | Creatures you control get +2/+1 until end of turn. Foretell {2}{W} (During your turn, you may pay {2} and exile this card from your hand face down. Cast it on a later turn for its foretell cost.) |