M:tG card similarity search
3 · Artifact
Whenever a land an opponent controls is tapped for mana, tap all lands that player controls that could produce any type of mana that land could produce.
| Name | Mana | Type | Text |
|---|---|---|---|
| The Ringhart Crest | 1G | Legendary Artifact | As The Ringhart Crest enters the battlefield, choose a creature type. {T}: Add {G}. Spend this mana only to cast a creature spell of the chosen type or a legendary creature spell. |
| The Ruinous Powers | 2BR | Enchantment | At the beginning of your upkeep, choose an opponent at random. Exile the top card of that player's library. Until end of turn, you may play that card and you may spend mana as though it were mana of any color to cast it. When you cast a spell this way, its owner loses life equal to its mana value. |
| Orc Sureshot | 3B | Creature — Orc Archer | Whenever another creature enters the battlefield under your control, target creature an opponent controls gets -1/-1 until end of turn. 4/2 |
| In the Eye of Chaos | 2U | World Enchantment | Whenever a player casts an instant spell, counter it unless that player pays {X}, where X is its mana value. |
| Koth of the Hammer | 2RR | Legendary Planeswalker — Koth | [+1]: Untap target Mountain. It becomes a 4/4 red Elemental creature until end of turn. It's still a land. [−2]: Add {R} for each Mountain you control. [−5]: You get an emblem with "Mountains you control have '{T}: This land deals 1 damage to any target.'" Loyalty 3 |
| Somberwald Sage | 2G | Creature — Human Druid | {T}: Add three mana of any one color. Spend this mana only to cast creature spells. 0/1 |
| Gnottvold Slumbermound | Land | Gnottvold Slumbermound enters the battlefield tapped. {T}: Add {R}. {3}{R}{G}{G}, {T}, Sacrifice Gnottvold Slumbermound: Destroy target land. Create a 4/4 green Troll Warrior creature token with trample. | |
| Grim Physician | B | Creature — Zombie | When Grim Physician dies, target creature an opponent controls gets -1/-1 until end of turn. 1/1 |
| Earth Tremor | 3R | Instant | Earth Tremor deals damage to target creature or planeswalker equal to the number of lands you control. |
| Cyclopean Tomb | 4 | Artifact | {2}, {T}: Put a mire counter on target non-Swamp land. That land is a Swamp for as long as it has a mire counter on it. Activate only during your upkeep. When Cyclopean Tomb is put into a graveyard from the battlefield, at the beginning of each of your upkeeps for the rest of the game, remove all mire counters from a land that a mire counter was put onto with Cyclopean Tomb but that a mire counter has not been removed from with Cyclopean Tomb. |