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 |
|---|---|---|---|
| Harbinger of Night | 2BB | Creature — Spirit | At the beginning of your upkeep, put a -1/-1 counter on each creature. 2/3 |
| Dirtwater Wraith | 3B | Creature — Wraith | Swampwalk (This creature can't be blocked as long as defending player controls a Swamp.) {B}: Dirtwater Wraith gets +1/+0 until end of turn. 1/3 |
| Adarkar Sentinel | 5 | Artifact Creature — Soldier | {1}: Adarkar Sentinel gets +0/+1 until end of turn. 3/3 |
| The Mycosynth Gardens | Land — Sphere | {T}: Add {C}. {1}, {T}: Add one mana of any color. {X}, {T}: The Mycosynth Gardens becomes a copy of target nontoken artifact you control with mana value X. | |
| Firescreamer | 3B | Creature — Kavu | {R}: Firescreamer gets +1/+0 until end of turn. 2/2 |
| Nakaya Shade | 1B | Creature — Shade | {B}: Nakaya Shade gets +1/+1 until end of turn unless any player pays {2}. 1/1 |
| Desperate Stand | RW | Sorcery | Strive — This spell costs {R}{W} more to cast for each target beyond the first. Any number of target creatures each get +2/+0 and gain first strike and vigilance until end of turn. |
| Flowstone Wall | 2R | Creature — Wall | Defender (This creature can't attack.) {R}: Flowstone Wall gets +1/-1 until end of turn. 0/6 |
| Taste for Mayhem | R | Enchantment — Aura | Enchant creature Enchanted creature gets +2/+0. Hellbent — Enchanted creature gets an additional +2/+0 as long as you have no cards in hand. |
| Augmenting Automaton | 1 | Artifact Creature — Construct | {1}{B}: Augmenting Automaton gets +1/+1 until end of turn. 1/1 |