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 |
|---|---|---|---|
| Shelob's Ambush | B | Instant | Target creature gets +1/+2 and gains deathtouch until end of turn. Create a Food token. (It's an artifact with "{2}, {T}, Sacrifice this artifact: You gain 3 life.") |
| Decree of Pain | 6BB | Sorcery | Destroy all creatures. They can't be regenerated. Draw a card for each creature destroyed this way. Cycling {3}{B}{B} ({3}{B}{B}, Discard this card: Draw a card.) When you cycle Decree of Pain, all creatures get -2/-2 until end of turn. |
| Conqueror's Flail | 2 | Artifact — Equipment | Equipped creature gets +1/+1 for each color among permanents you control. As long as Conqueror's Flail is attached to a creature, your opponents can't cast spells during your turn. Equip {2} |
| Springleaf Drum | 1 | Artifact | {T}, Tap an untapped creature you control: Add one mana of any color. |
| Cliffside Market | Plane — Mercadia | When you planeswalk to Cliffside Market or at the beginning of your upkeep, you may exchange life totals with target player. Whenever chaos ensues, exchange control of two target permanents that share a card type. | |
| Llanowar Augur | G | Creature — Elf Shaman | Sacrifice Llanowar Augur: Target creature gets +3/+3 and gains trample until end of turn. Activate only during your upkeep. 0/3 |
| Brightstone Ritual | R | Instant | Add {R} for each Goblin on the battlefield. |
| Hearthcage Giant | 6RR | Creature — Giant Warrior | When Hearthcage Giant enters the battlefield, create two 3/1 red Elemental Shaman creature tokens. Sacrifice an Elemental: Target Giant creature gets +3/+1 until end of turn. 5/5 |
| Grenzo, Crooked Jailer | 4BR | Legendary Creature — Goblin Rogue | When Grenzo enters the battlefield and at the beginning of your upkeep, heist target opponent's library. Once each turn, you may pay {0} rather than pay the mana cost for a spell you cast that you don't own. 6/4 |
| Throne of the God-Pharaoh | 2 | Legendary Artifact | At the beginning of your end step, each opponent loses life equal to the number of tapped creatures you control. |