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 |
|---|---|---|---|
| Price of Knowledge | 6B | Enchantment | Players have no maximum hand size. At the beginning of each opponent's upkeep, Price of Knowledge deals damage to that player equal to the number of cards in that player's hand. |
| Spinal Parasite | 5 | Artifact Creature — Insect | Sunburst (This enters the battlefield with a +1/+1 counter on it for each color of mana spent to cast it.) Remove two +1/+1 counters from Spinal Parasite: Remove a counter from target permanent. -1/-1 |
| Midnight Arsonist | 3R | Creature — Vampire | When Midnight Arsonist enters the battlefield, destroy up to X target artifacts without mana abilities, where X is the number of Vampires you control. 3/2 |
| Nature's Claim | G | Instant | Destroy target artifact or enchantment. Its controller gains 4 life. |
| Veiled Ascension | 3W | Enchantment | When Veiled Ascension enters the battlefield, put a flying counter on each face-down creature you control. Face-down creatures you control enter the battlefield with a flying counter on them. At the beginning of your upkeep, you may cloak the top card of your library. |
| Quicksilver Fountain | 3 | Artifact | At the beginning of each player's upkeep, that player puts a flood counter on target non-Island land they control of their choice. That land is an Island for as long as it has a flood counter on it. At the beginning of each end step, if all lands on the battlefield are Islands, remove all flood counters from them. |
| Hideous Fleshwheeler | Creature — Phyrexian Rat | Menace (This creature can't be blocked except by two or more creatures.) When this creature transforms into Hideous Fleshwheeler, put target permanent card with mana value 2 or less from a graveyard onto the battlefield under your control. 4/5 | |
| Lavinia of the Tenth | 3WU | Legendary Creature — Human Soldier | Protection from red When Lavinia of the Tenth enters the battlefield, detain each nonland permanent your opponents control with mana value 4 or less. (Until your next turn, those permanents can't attack or block and their activated abilities can't be activated.) 4/4 |
| Aether Storm | 3U | Enchantment | Creature spells can't be cast. Pay 4 life: Destroy Aether Storm. It can't be regenerated. Any player may activate this ability. |
| Crack Open | 2G | Sorcery | Destroy target artifact or enchantment. Create a Treasure token. (It's an artifact with "{T}, Sacrifice this artifact: Add one mana of any color.") |