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 |
|---|---|---|---|
| Naya Battlemage | 2G | Creature — Human Shaman | {R}, {T}: Target creature gets +2/+0 until end of turn. {W}, {T}: Tap target creature. 2/2 |
| Shed Weakness | G | Instant | Target creature gets +2/+2 until end of turn. You may remove a -1/-1 counter from it. |
| Black Sun's Twilight | XB | Instant | Up to one target creature gets -X/-X until end of turn. If X is 5 or more, return a creature card with mana value X or less from your graveyard to the battlefield tapped. |
| Hall of Gemstone | 1GG | World Enchantment | At the beginning of each player's upkeep, that player chooses a color. Until end of turn, lands tapped for mana produce mana of the chosen color instead of any other color. |
| Rank and File | 2BB | Creature — Zombie | When Rank and File enters the battlefield, green creatures get -1/-1 until end of turn. 3/3 |
| Balduvian Fallen | 3B | Creature — Zombie | Cumulative upkeep {1} (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.) Whenever Balduvian Fallen's cumulative upkeep is paid, it gets +1/+0 until end of turn for each {B} or {R} spent this way. 3/5 |
| Blades of Velis Vel | 1R | Tribal Instant — Shapeshifter | Changeling (This card is every creature type.) Up to two target creatures each get +2/+0 and gain all creature types until end of turn. |
| Ana Disciple | G | Creature — Human Wizard | {U}, {T}: Target creature gains flying until end of turn. {B}, {T}: Target creature gets -2/-0 until end of turn. 1/1 |
| Unlikely Alliance | 1W | Enchantment | {1}{W}: Target nonattacking, nonblocking creature gets +0/+2 until end of turn. |
| Amorphous Axe | 2 | Artifact — Equipment | Equipped creature gets +3/+0 and is every creature type. Equip {3} ({3}: Attach to target creature you control. Equip only as a sorcery.) |