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 |
|---|---|---|---|
| Mightstone | 4 | Artifact | Attacking creatures get +1/+0. |
| One-Eyed Scarecrow | 3 | Artifact Creature — Scarecrow | Defender Creatures with flying your opponents control get -1/-0. 2/3 |
| Jamie McCrimmon | 2G | Legendary Creature — Human Warrior | Trample Whenever you cast a historic spell, Jamie McCrimmon gets +X/+X until end of turn, where X is that spell's mana value. (Artifacts, legendaries, and Sagas are historic.) Doctor's companion (You can have two commanders if the other is the Doctor.) 2/2 |
| Whispersteel Dagger | 2B | Artifact — Equipment | Equipped creature gets +2/+0. Whenever equipped creature deals combat damage to a player, you may cast a creature spell from that player's graveyard this turn, and you may spend mana as though it were mana of any color to cast that spell. Equip {3} |
| Second Breakfast | 2W | Instant | Up to two target creatures each get +2/+1 until end of turn. Create a Food token. (It's an artifact with "{2}, {T}, Sacrifice this artifact: You gain 3 life.") |
| Undead Leotau | 5B | Creature — Zombie Cat | {R}: Undead Leotau gets +1/-1 until end of turn. Unearth {2}{B} ({2}{B}: Return this card from your graveyard to the battlefield. It gains haste. Exile it at the beginning of the next end step or if it would leave the battlefield. Unearth only as a sorcery.) 3/4 |
| Quillspike | 2B/G | Creature — Beast | {B/G}, Remove a -1/-1 counter from a creature you control: Quillspike gets +3/+3 until end of turn. 1/1 |
| Stormbreath Dragon | 3RR | Creature — Dragon | Flying, haste, protection from white {5}{R}{R}: Monstrosity 3. (If this creature isn't monstrous, put three +1/+1 counters on it and it becomes monstrous.) When Stormbreath Dragon becomes monstrous, it deals damage to each opponent equal to the number of cards in that player's hand. 4/4 |
| Cavern of Souls | Land | As Cavern of Souls 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, and that spell can't be countered. | |
| Orc Sureshot | 3B | Creature — Orc Archer | Whenever another creature enters the battlefield under your control, target creature an opponent controls gets -1/-1 until end of turn. 4/2 |