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 |
|---|---|---|---|
| Spikefield Cave | Land | Spikefield Cave enters the battlefield tapped. {T}: Add {R}. | |
| Stone Quarry | Land | Stone Quarry enters the battlefield tapped. {T}: Add {R} or {W}. | |
| Submerged Boneyard | Land | Submerged Boneyard enters the battlefield tapped. {T}: Add {U} or {B}. | |
| Tangled Vale | Land | Tangled Vale enters the battlefield tapped. {T}: Add {G}. | |
| Timber Gorge | Land | Timber Gorge enters the battlefield tapped. {T}: Add {R} or {G}. | |
| Timeless Lotus | 5 | Legendary Artifact | Timeless Lotus enters the battlefield tapped. {T}: Add {W}{U}{B}{R}{G}. |
| Tranquil Expanse | Land | Tranquil Expanse enters the battlefield tapped. {T}: Add {G} or {W}. | |
| Tresserhorn Sinks | Snow Land | Tresserhorn Sinks enters the battlefield tapped. {T}: Add {B} or {R}. | |
| Umara Skyfalls | Land | Umara Skyfalls enters the battlefield tapped. {T}: Add {U}. | |
| Urborg Volcano | Land | Urborg Volcano enters the battlefield tapped. {T}: Add {B} or {R}. |