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 |
|---|---|---|---|
| Heightened Reflexes | R | Instant | Target creature gets +1/+0 until end of turn. Put a first strike counter on it. |
| Rakdos Trumpeter | 1B | Creature — Human Shaman | Menace (This creature can't be blocked except by two or more creatures.) {3}{R}: Rakdos Trumpeter gets +2/+0 until end of turn. 1/3 |
| Great Teacher's Decree | 3W | Sorcery | Creatures you control get +2/+1 until end of turn. Rebound (If you cast this spell from your hand, exile it as it resolves. At the beginning of your next upkeep, you may cast this card from exile without paying its mana cost.) |
| Lair of the Ashen Idol | Plane — Azgol | At the beginning of your upkeep, sacrifice a creature. If you can't, planeswalk. Whenever chaos ensues, any number of target players each create a 2/2 black Zombie creature token. | |
| Urza, Lord High Artificer | 2UU | Legendary Creature — Human Artificer | When Urza, Lord High Artificer enters the battlefield, create a 0/0 colorless Construct artifact creature token with "This creature gets +1/+1 for each artifact you control." Tap an untapped artifact you control: Add {U}. {5}: Shuffle your library, then exile the top card. Until end of turn, you may play that card without paying its mana cost. 1/4 |
| Tariff | 1W | Sorcery | Each player sacrifices the creature they control with the highest mana value unless they pay that creature's mana cost. If two or more creatures a player controls are tied for highest, that player chooses one. |
| Hatred | 3BB | Instant | As an additional cost to cast this spell, pay X life. Target creature gets +X/+0 until end of turn. |
| Fake Your Own Death | 1B | Instant | Until end of turn, target creature gets +2/+0 and gains "When this creature dies, return it to the battlefield tapped under its owner's control and you create a Treasure token." (It's an artifact with "{T}, Sacrifice this artifact: Add one mana of any color.") |
| Vines of Vastwood | G | Instant | Kicker {G} (You may pay an additional {G} as you cast this spell.) Target creature can't be the target of spells or abilities your opponents control this turn. If this spell was kicked, that creature gets +4/+4 until end of turn. |
| Cavern Thoctar | 5G | Creature — Beast | {1}{R}: Cavern Thoctar gets +1/+0 until end of turn. 5/5 |