M:tG card similarity search
3R · Enchantment
At the beginning of each upkeep, count the number of permanents. If the number is odd, until end of turn, red creatures get +1/+1 and whenever a player taps a Mountain for mana, that player adds an additional {R}. If the number is even, until end of turn, red creatures get -1/-1 and if a player taps a Mountain for mana, that Mountain produces colorless mana instead of any other type.
| Name | Mana | Type | Text |
|---|---|---|---|
| Undead Executioner | 3B | Creature — Zombie | When Undead Executioner dies, you may have target creature get -2/-2 until end of turn. 2/2 |
| Laughing Jasper Flint | 1BR | Legendary Creature — Lizard Rogue | Creatures you control but don't own are Mercenaries in addition to their other types. At the beginning of your upkeep, exile the top X cards of target opponent's library, where X is the number of outlaws you control. Until end of turn, you may cast spells from among those cards, and mana of any type can be spent to cast those spells. 4/3 |
| War Dance | G | Enchantment | At the beginning of your upkeep, you may put a verse counter on War Dance. Sacrifice War Dance: Target creature gets +X/+X until end of turn, where X is the number of verse counters on War Dance. |
| Death Frenzy | 3BG | Sorcery | All creatures get -2/-2 until end of turn. Whenever a creature dies this turn, you gain 1 life. |
| Konda's Banner | 2 | Legendary Artifact — Equipment | Konda's Banner can be attached only to a legendary creature. Creatures that share a color with equipped creature get +1/+1. Creatures that share a creature type with equipped creature get +1/+1. Equip {2} |
| Wolf in _____ Clothing | 3B | Creature — Wolf Guest | When this creature enters the battlefield, you may put a name sticker on it. When you do, up to X target creatures each get -1/-1 until end of turn, where X is the number of unique vowels on that sticker. (The vowels are A, E, I, O, U, and Y.) 2/3 |
| Neutralize the Guards | 2B | Instant | Creatures target opponent controls get -1/-1 until end of turn. Surveil 2. (Look at the top two cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.) |
| Mana Echoes | 2RR | Enchantment | Whenever a creature enters the battlefield, you may add an amount of {C} equal to the number of creatures you control that share a creature type with it. |
| Fiery Bombardment | 1R | Enchantment | Chroma — {2}, Sacrifice a creature: Fiery Bombardment deals damage to any target equal to the number of red mana symbols in the sacrificed creature's mana cost. |
| Confront the Unknown | G | Instant | Investigate, then target creature gets +1/+1 until end of turn for each Clue you control. (Create a Clue token. It's an artifact with "{2}, Sacrifice this artifact: Draw a card.") |