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 |
|---|---|---|---|
| Valakut Stoneforge | Land | Valakut Stoneforge enters the battlefield tapped. {T}: Add {R}. | |
| Vastwood Thicket | Land | Vastwood Thicket enters the battlefield tapped. {T}: Add {G}. | |
| Woodland Stream | Land | Woodland Stream enters the battlefield tapped. {T}: Add {G} or {U}. | |
| Worn Powerstone | 3 | Artifact | Worn Powerstone enters the battlefield tapped. {T}: Add {C}{C}. |
| Zof Bloodbog | Land | Zof Bloodbog enters the battlefield tapped. {T}: Add {B}. | |
| Rampaging Geoderm | 2RG | Creature — Dinosaur Beast | Trample, haste Whenever you attack, target attacking creature gets +1/+1 until end of turn. If it's attacking a battle, put a +1/+1 counter on it instead. 3/3 |
| Mishra's Foundry | Land | {T}: Add {C}. {2}: Mishra's Foundry becomes a 2/2 Assembly-Worker artifact creature until end of turn. It's still a land. {1}, {T}: Target attacking Assembly-Worker gets +2/+2 until end of turn. | |
| Nassari, Dean of Expression | 3RR | Legendary Creature — Efreet Shaman | At the beginning of your upkeep, exile the top card of each opponent's library. Until end of turn, you may cast spells from among those exiled cards, and you may spend mana as though it were mana of any color to cast those spells. Whenever you cast a spell from exile, put a +1/+1 counter on Nassari, Dean of Expression. 4/4 |
| Battle Frenzy | 2R | Instant | Green creatures you control get +1/+1 until end of turn. Nongreen creatures you control get +1/+0 until end of turn. |
| Folk of An-Havva | G | Creature — Human | Whenever Folk of An-Havva blocks, it gets +2/+0 until end of turn. 1/1 |