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 |
|---|---|---|---|
| Ring of Evos Isle | 2 | Artifact — Equipment | {2}: Equipped creature gains hexproof until end of turn. (It can't be the target of spells or abilities your opponents control.) At the beginning of your upkeep, put a +1/+1 counter on equipped creature if it's blue. Equip {1} ({1}: Attach to target creature you control. Equip only as a sorcery.) |
| Anthem of Rakdos | 2BRR | Enchantment | Whenever a creature you control attacks, it gets +2/+0 until end of turn and Anthem of Rakdos deals 1 damage to you. Hellbent — As long as you have no cards in hand, if a source you control would deal damage to a permanent or player, it deals double that damage to that permanent or player instead. |
| Midnight Banshee | 3BBB | Creature — Spirit | Wither (This deals damage to creatures in the form of -1/-1 counters.) At the beginning of your upkeep, put a -1/-1 counter on each nonblack creature. 5/5 |
| Blackblade Reforged | 2 | Legendary Artifact — Equipment | Equipped creature gets +1/+1 for each land you control. Equip legendary creature {3} Equip {7} |
| Riding the Dilu Horse | 2G | Sorcery | Target creature gets +2/+2 and gains horsemanship. (It can't be blocked except by creatures with horsemanship. This effect lasts indefinitely.) |
| Relic of Legends | 3 | Artifact | {T}: Add one mana of any color. Tap an untapped legendary creature you control: Add one mana of any color. |
| Generator Servant | 1R | Creature — Elemental | {T}, Sacrifice Generator Servant: Add {C}{C}. If that mana is spent on a creature spell, it gains haste until end of turn. (That creature can attack and {T} as soon as it comes under your control.) 2/1 |
| Cast into Darkness | 1B | Enchantment — Aura | Enchant creature Enchanted creature gets -2/-0 and can't block. |
| Crippling Blight | B | Enchantment — Aura | Enchant creature Enchanted creature gets -1/-1 and can't block. |
| Aether Hub | Land | When Aether Hub enters the battlefield, you get {E} (an energy counter). {T}: Add {C}. {T}, Pay {E}: Add one mana of any color. |