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 |
|---|---|---|---|
| Power Leak | 1U | Enchantment — Aura | Enchant enchantment At the beginning of the upkeep of enchanted enchantment's controller, that player may pay any amount of mana. Power Leak deals 2 damage to that player. Prevent X of that damage, where X is the amount of mana that player paid this way. |
| Lavastep Raider | R | Creature — Goblin Warrior | {2}{R}: Lavastep Raider gets +2/+0 until end of turn. 1/2 |
| Teeterpeak Ambusher | 1R | Creature — Goblin Warrior | {2}{R}: Teeterpeak Ambusher gets +2/+0 until end of turn. 1/3 |
| Fell Shepherd | 5BB | Creature — Avatar | Whenever Fell Shepherd deals combat damage to a player, you may return to your hand all creature cards that were put into your graveyard from the battlefield this turn. {B}, Sacrifice another creature: Target creature gets -2/-2 until end of turn. 8/6 |
| As Foretold | 2U | Enchantment | At the beginning of your upkeep, put a time counter on As Foretold. Once each turn, you may pay {0} rather than pay the mana cost for a spell you cast with mana value X or less, where X is the number of time counters on As Foretold. |
| Argivian Avenger | 6 | Artifact Creature — Shapeshifter | {1}: Until end of turn, Argivian Avenger gets -1/-1 and gains your choice of flying, vigilance, deathtouch, or haste. 5/5 |
| Wildheart Invoker | 2GG | Creature — Elf Shaman | {8}: Target creature gets +5/+5 and gains trample until end of turn. 4/3 |
| Topan Ascetic | 2G | Creature — Human Monk | Tap an untapped creature you control: Topan Ascetic gets +1/+1 until end of turn. 2/2 |
| Sliver Legion | WUBRG | Legendary Creature — Sliver | All Sliver creatures get +1/+1 for each other Sliver on the battlefield. 7/7 |
| Gaea's Might | G | Instant | Domain — Target creature gets +1/+1 until end of turn for each basic land type among lands you control. |