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 |
|---|---|---|---|
| Sugar Rush | 1B | Instant | Target creature gets +3/+0 until end of turn. Draw a card. |
| Stinkdrinker Bandit | 3B | Creature — Goblin Rogue | Prowl {1}{B} (You may cast this for its prowl cost if you dealt combat damage to a player this turn with a Goblin or Rogue.) Whenever a Rogue you control attacks and isn't blocked, it gets +2/+1 until end of turn. 2/1 |
| Impelled Giant | 4RR | Creature — Giant Warrior | Trample Tap an untapped red creature you control other than Impelled Giant: Impelled Giant gets +X/+0 until end of turn, where X is the power of the creature tapped this way. 3/3 |
| Royal Decree | 2WW | Enchantment | Cumulative upkeep {W} (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.) Whenever a Swamp, Mountain, black permanent, or red permanent becomes tapped, Royal Decree deals 1 damage to that permanent's controller. |
| Cauldron Haze | 1W/B | Instant | Choose any number of target creatures. Each of those creatures gains persist until end of turn. (When it dies, if it had no -1/-1 counters on it, return it to the battlefield under its owner's control with a -1/-1 counter on it.) |
| Cauldron of Souls | 5 | Artifact | {T}: Choose any number of target creatures. Each of those creatures gains persist until end of turn. (When it dies, if it had no -1/-1 counters on it, return it to the battlefield under its owner's control with a -1/-1 counter on it.) |
| North Star | 4 | Artifact | {4}, {T}: For one spell this turn, you may spend mana as though it were mana of any type to pay that spell's mana cost. (Additional costs are still paid normally.) |
| Zhalfirin Commander | 2W | Creature — Human Knight | Flanking (Whenever a creature without flanking blocks this creature, the blocking creature gets -1/-1 until end of turn.) {1}{W}{W}: Target Knight creature gets +1/+1 until end of turn. 2/2 |
| Tyvar the Bellicose | 2BG | Legendary Creature — Elf Warrior | Whenever one or more Elves you control attack, they gain deathtouch until end of turn. Each creature you control has "Whenever a mana ability of this creature resolves, put a number of +1/+1 counters on it equal to the amount of mana this creature produced. This ability triggers only once each turn." 5/4 |
| The Core | Legendary Land | (Transforms from Matzalantli.) Fathomless descent — {T}: Add X mana of any one color, where X is the number of permanent cards in your graveyard. |