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 |
|---|---|---|---|
| Curse of Inertia | 2U | Enchantment — Aura Curse | Enchant player Whenever a player attacks enchanted player with one or more creatures, that attacking player may tap or untap target permanent of their choice. |
| Nyxathid | 1BB | Creature — Elemental | As Nyxathid enters the battlefield, choose an opponent. Nyxathid gets -1/-1 for each card in the chosen player's hand. 7/7 |
| Uktabi Efreet | 2GG | Creature — Efreet | Cumulative upkeep {G} (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.) 5/4 |
| Spectral Searchlight | 3 | Artifact | {T}: Choose a player. That player adds one mana of any color they choose. |
| Obsessive Collector | 3U | Creature — Spirit | Flying Ward {2} Whenever Obsessive Collector deals combat damage to a player, seek a card with mana value equal to the number of cards in your hand. 4/4 |
| Oaken Power Suit | Artifact — Contraption | Whenever you crank Oaken Power Suit, target creature gets +X/+X until end of turn, where X is the greatest power among creatures you control. | |
| Aleatory | 1R | Instant | Cast this spell only during combat after blockers are declared. Flip a coin. If you win the flip, target creature gets +1/+1 until end of turn. Draw a card at the beginning of the next turn's upkeep. |
| Enslaved Scout | 2R | Creature — Goblin Scout | {2}: Enslaved Scout gains mountainwalk until end of turn. (It can't be blocked as long as defending player controls a Mountain.) 2/2 |
| Baral and Kari Zev | 1UR | Legendary Creature — Human | First strike, menace Whenever you cast your first instant or sorcery spell each turn, you may cast a spell with lesser mana value that shares a card type with it from your hand without paying its mana cost. If you don't, create First Mate Ragavan, a legendary 2/1 red Monkey Pirate creature token. It gains haste until end of turn. 2/4 |
| Wildblood Pack | Creature — Werewolf | Trample Attacking creatures you control get +3/+0. At the beginning of each upkeep, if a player cast two or more spells last turn, transform Wildblood Pack. 5/5 |