M:tG card similarity search
| Name | Mana | Type | Text |
|---|---|---|---|
| Mox Opal | 0 | Legendary Artifact | Metalcraft — {T}: Add one mana of any color. Activate only if you control three or more artifacts. |
| Honored Heirloom | 3 | Artifact | {T}: Add one mana of any color. {2}, {T}: Exile target card from a graveyard. |
| Library of Alexandria | Land | {T}: Add {C}. {T}: Draw a card. Activate only if you have exactly seven cards in hand. | |
| Unstable Obelisk | 3 | Artifact | {T}: Add {C}. {7}, {T}, Sacrifice Unstable Obelisk: Destroy target permanent. |
| Omen Hawker | U | Creature — Cephalid Advisor | {T}: Add {C}{U}. Spend this mana only to activate abilities. 1/1 |
| Letter of Acceptance | 3 | Artifact | {T}: Add one mana of any color. {2}, {T}, Sacrifice Letter of Acceptance: Draw a card. |
| Memorial to Genius | Land | Memorial to Genius enters the battlefield tapped. {T}: Add {U}. {4}{U}, {T}, Sacrifice Memorial to Genius: Draw two cards. | |
| Culling Drone | 1B | Creature — Eldrazi Drone | Devoid (This card has no color.) Ingest (Whenever this creature deals combat damage to a player, that player exiles the top card of their library.) 2/2 |
| Pentad Prism | 2 | Artifact | Sunburst (This enters the battlefield with a charge counter on it for each color of mana spent to cast it.) Remove a charge counter from Pentad Prism: Add one mana of any color. |
| Hidden Cataract | Land — Cave | Hidden Cataract enters the battlefield tapped. {T}: Add {U}. {4}{U}, {T}, Sacrifice Hidden Cataract: Discover 4. Activate only as a sorcery. (Exile cards from the top of your library until you exile a nonland card with mana value 4 or less. Cast it without paying its mana cost or put it into your hand. Put the rest on the bottom in a random order.) |