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3 · Legendary Artifact
Karn's Sylex enters the battlefield tapped. Players can't pay life to cast spells or to activate abilities that aren't mana abilities. {X}, {T}, Exile Karn's Sylex: Destroy each nonland permanent with mana value X or less. Activate only as a sorcery.
| Name | Mana | Type | Text |
|---|---|---|---|
| Boreal Shelf | Snow Land | Boreal Shelf enters the battlefield tapped. {T}: Add {W} or {U}. | |
| Boros Guildgate | Land — Gate | Boros Guildgate enters the battlefield tapped. {T}: Add {R} or {W}. | |
| Charcoal Diamond | 2 | Artifact | Charcoal Diamond enters the battlefield tapped. {T}: Add {B}. |
| Cinder Barrens | Land | Cinder Barrens enters the battlefield tapped. {T}: Add {B} or {R}. | |
| Coastal Tower | Land | Coastal Tower enters the battlefield tapped. {T}: Add {W} or {U}. | |
| Crumbling Necropolis | Land | Crumbling Necropolis enters the battlefield tapped. {T}: Add {U}, {B}, or {R}. | |
| Dimir Guildgate | Land — Gate | Dimir Guildgate enters the battlefield tapped. {T}: Add {U} or {B}. | |
| Elfhame Palace | Land | Elfhame Palace enters the battlefield tapped. {T}: Add {G} or {W}. | |
| Enchanted Prairie | Enchantment Land | Enchanted Prairie enters the battlefield tapped. {T}: Add {W} or {U}. | |
| Fire Diamond | 2 | Artifact | Fire Diamond enters the battlefield tapped. {T}: Add {R}. |