M:tG card similarity search
1W/BW/B · Legendary Creature — Cat Nightmare
Companion — Each permanent card in your starting deck has mana value 2 or less. (If this card is your chosen companion, you may put it into your hand from outside the game for {3} as a sorcery.) Lifelink Once during each of your turns, you may cast a permanent spell with mana value 2 or less from your graveyard. 3/2
| Name | Mana | Type | Text |
|---|---|---|---|
| Vivien, Monsters' Advocate | 3GG | Legendary Planeswalker — Vivien | You may look at the top card of your library any time. You may cast creature spells from the top of your library. [+1]: Create a 3/3 green Beast creature token. Put your choice of a vigilance counter, a reach counter, or a trample counter on it. [−2]: When you next cast a creature spell this turn, search your library for a creature card with lesser mana value, put it onto the battlefield, then shuffle. Loyalty 3 |
| Bard Class | RG | Enchantment — Class | (Gain the next level as a sorcery to add its ability.) Legendary creatures you control enter the battlefield with an additional +1/+1 counter on them. {R}{G}: Level 2 Legendary spells you cast cost {R}{G} less to cast. This effect reduces only the amount of colored mana you pay. {3}{R}{G}: Level 3 Whenever you cast a legendary spell, exile the top two cards of your library. You may play them this turn. |
| Viashino Heretic | 2R | Creature — Viashino | {1}{R}, {T}: Destroy target artifact. Viashino Heretic deals damage to that artifact's controller equal to the artifact's mana value. 1/3 |
| Opal Avenger | 2W | Enchantment | When you have 10 or less life, if Opal Avenger is an enchantment, Opal Avenger becomes a 3/5 Soldier creature. |
| Aether Mutation | 3GU | Sorcery | Return target creature to its owner's hand. Create X 1/1 green Saproling creature tokens, where X is that creature's mana value. |
| Ritual of Subdual | 4GG | Enchantment | Cumulative upkeep {2} (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.) If a land is tapped for mana, it produces colorless mana instead of any other type. |
| Doubling Cube | 2 | Artifact | {3}, {T}: Double the amount of each type of unspent mana you have. |
| Heartstone | 3 | Artifact | Activated abilities of creatures cost {1} less to activate. This effect can't reduce the mana in that cost to less than one mana. |
| Stronghold Gambit | 1R | Sorcery | Each player chooses a card in their hand. Then each player reveals their chosen card. The owner of each creature card revealed this way with the lowest mana value puts it onto the battlefield. |
| Stronghold Arena | 1B | Enchantment | Kicker {G} and/or {W} (You may pay an additional {G} and/or {W} as you cast this spell.) When Stronghold Arena enters the battlefield, you gain 3 life for each time it was kicked. Whenever one or more creatures you control deal combat damage to a player, you may reveal the top card of your library and put it into your hand. If you do, you lose life equal to its mana value. |