M:tG card similarity search
1BR · Enchantment
Cumulative upkeep {1} (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.) At the beginning of your upkeep, put a rust counter on each artifact target opponent controls. Then destroy each artifact with mana value less than or equal to the number of rust counters on it. Artifacts destroyed this way can't be regenerated. When Corrosion leaves the battlefield, remove all rust counters from all permanents.
| Name | Mana | Type | Text |
|---|---|---|---|
| Phyrexian Swarmlord | 4GG | Creature — Phyrexian Insect Horror | Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.) At the beginning of your upkeep, create a 1/1 green Phyrexian Insect creature token with infect for each poison counter your opponents have. 4/4 |
| Thoughtbound Primoc | 2R | Creature — Bird Beast | Flying At the beginning of your upkeep, if a player controls more Wizards than each other player, the player who controls the most Wizards gains control of Thoughtbound Primoc. 2/3 |
| Galvanic Key | 2 | Artifact | Flash {3}, {T}: Untap target artifact. |
| Acid Rain | 3U | Sorcery | Destroy all Forests. |
| Ravenous Squirrel | B/G | Creature — Squirrel | Whenever you sacrifice an artifact or creature, put a +1/+1 counter on Ravenous Squirrel. {1}{B}{G}, Sacrifice an artifact or creature: You gain 1 life and draw a card. 1/1 |
| Ingenious Prodigy | XU | Creature — Human Wizard | Skulk (This creature can't be blocked by creatures with greater power.) Ingenious Prodigy enters the battlefield with X +1/+1 counters on it. At the beginning of your upkeep, if Ingenious Prodigy has one or more +1/+1 counters on it, you may remove a +1/+1 counter from it. If you do, draw a card. 0/1 |
| Beseech the Queen | 2/B2/B2/B | Sorcery | ({2/B} can be paid with any two mana or with {B}. This card's mana value is 6.) Search your library for a card with mana value less than or equal to the number of lands you control, reveal it, put it into your hand, then shuffle. |
| Extinguish the Light | 2BB | Instant | Destroy target creature or planeswalker. If its mana value was 3 or less, you gain 3 life. |
| Palantír of Orthanc | 3 | Legendary Artifact | At the beginning of your end step, put an influence counter on Palantír of Orthanc and scry 2. Then target opponent may have you draw a card. If that player doesn't, you mill X cards, where X is the number of influence counters on Palantír of Orthanc, and that player loses life equal to the total mana value of those cards. |
| Quarantine Field | XXWW | Enchantment | Quarantine Field enters the battlefield with X isolation counters on it. When Quarantine Field enters the battlefield, for each isolation counter on it, exile up to one target nonland permanent an opponent controls until Quarantine Field leaves the battlefield. |