M:tG card similarity search
· Land
{T}: Add {C}. {T}: Add one mana of any color. Spend this mana only to cast a spell that shares a watermark with Secret Base.
| Name | Mana | Type | Text |
|---|---|---|---|
| Knowledge Pool | 6 | Artifact | Imprint — When Knowledge Pool enters the battlefield, each player exiles the top three cards of their library. Whenever a player casts a spell from their hand, that player exiles it. If the player does, they may cast a spell from among other cards exiled with Knowledge Pool without paying its mana cost. |
| Rootbound Crag | Land | Rootbound Crag enters the battlefield tapped unless you control a Mountain or a Forest. {T}: Add {R} or {G}. | |
| Alabaster Leech | W | Creature — Leech | White spells you cast cost {W} more to cast. 1/3 |
| Runecarved Obelisk | 4 | Artifact | {T}: Add {C}{C}. Put two charge counters on Runecarved Obelisk. {T}, Sacrifice Runecarved Obelisk: Seek a card with the highest mana value among cards in your library with mana value X or less, where X is the number of charge counters on Runecarved Obelisk. |
| Double Down | 3U | Enchantment | Whenever you cast an outlaw spell, copy that spell. (Assassins, Mercenaries, Pirates, Rogues, and Warlocks are outlaws. Copies of permanent spells become tokens.) |
| Keldon Necropolis | Legendary Land | {T}: Add {C}. {4}{R}, {T}, Sacrifice a creature: Keldon Necropolis deals 2 damage to any target. | |
| Idol of Endurance | 2W | Artifact | When Idol of Endurance enters the battlefield, exile all creature cards with mana value 3 or less from your graveyard until Idol of Endurance leaves the battlefield. {1}{W}, {T}: Until end of turn, you may cast a creature spell from among cards exiled with Idol of Endurance without paying its mana cost. |
| Woodland Cemetery | Land | Woodland Cemetery enters the battlefield tapped unless you control a Swamp or a Forest. {T}: Add {B} or {G}. | |
| Skittering Invasion | 7 | Tribal Sorcery — Eldrazi | Create five 0/1 colorless Eldrazi Spawn creature tokens. They have "Sacrifice this creature: Add {C}." |
| Submerge | 4U | Instant | If an opponent controls a Forest and you control an Island, you may cast this spell without paying its mana cost. Put target creature on top of its owner's library. |