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 |
|---|---|---|---|
| Sunken City | UU | Enchantment | At the beginning of your upkeep, sacrifice Sunken City unless you pay {U}{U}. Blue creatures get +1/+1. |
| Souls of the Lost | 1B | Creature — Spirit | As an additional cost to cast this spell, discard a card or sacrifice a permanent. Fathomless descent — Souls of the Lost's power is equal to the number of permanent cards in your graveyard and its toughness is equal to that number plus 1. */*+1 |
| Moodmark Painter | 2BB | Creature — Human Shaman | Undergrowth — When Moodmark Painter enters the battlefield, target creature gains menace and gets +X/+0 until end of turn, where X is the number of creature cards in your graveyard. (It can't be blocked except by two or more creatures.) 2/3 |
| Equipoise | 2W | Enchantment | At the beginning of your upkeep, for each land target player controls in excess of the number you control, choose a land that player controls, then the chosen permanents phase out. Repeat this process for artifacts and creatures. (While they're phased out, they're treated as though they don't exist. They phase in before that player untaps during their next untap step.) |
| Breathstealer | 2B | Creature — Nightstalker | {B}: Breathstealer gets +1/-1 until end of turn. 2/2 |
| Secluded Courtyard | Land | As Secluded Courtyard enters the battlefield, choose a creature type. {T}: Add {C}. {T}: Add one mana of any color. Spend this mana only to cast a creature spell of the chosen type or activate an ability of a creature source of the chosen type. | |
| Neheb, Dreadhorde Champion | 2RR | Legendary Creature — Zombie Minotaur Warrior | Trample Whenever Neheb, Dreadhorde Champion deals combat damage to a player or planeswalker, you may discard any number of cards. If you do, draw that many cards and add that much {R}. Until end of turn, you don't lose this mana as steps and phases end. 5/4 |
| Horn of Valhalla | 1W | Artifact — Equipment | Equipped creature gets +1/+1 for each creature you control. Equip {3} |
| Pennon Blade | 3 | Artifact — Equipment | Equipped creature gets +1/+1 for each creature you control. Equip {4} ({4}: Attach to target creature you control. Equip only as a sorcery.) |
| Loot, the Key to Everything | GUR | Legendary Creature — Beast Noble | Ward {1} At the beginning of your upkeep, exile the top X cards of your library, where X is the number of card types among other nonland permanents you control. You may play those cards this turn. 1/2 |