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 |
|---|---|---|---|
| Surge Node | 1 | Artifact | Surge Node enters the battlefield with six charge counters on it. {1}, {T}, Remove a charge counter from Surge Node: Put a charge counter on target artifact. |
| Demonic Taskmaster | 2B | Creature — Demon | Flying At the beginning of your upkeep, sacrifice a creature other than Demonic Taskmaster. 4/3 |
| Animation Module | 1 | Artifact | Whenever one or more +1/+1 counters are put on a permanent you control, you may pay {1}. If you do, create a 1/1 colorless Servo artifact creature token. {3}, {T}: Choose a counter on target permanent or player. Give that permanent or player another counter of that kind. |
| Junk Golem | 4 | Artifact Creature — Golem | Junk Golem enters the battlefield with three +1/+1 counters on it. At the beginning of your upkeep, sacrifice Junk Golem unless you remove a +1/+1 counter from it. {1}, Discard a card: Put a +1/+1 counter on Junk Golem. 0/0 |
| Awakening | 2GG | Enchantment | At the beginning of each upkeep, untap all creatures and lands. |
| Walking Archive | 3 | Artifact Creature — Golem | Defender (This creature can't attack.) Walking Archive enters the battlefield with a +1/+1 counter on it. At the beginning of each player's upkeep, that player draws a card for each +1/+1 counter on Walking Archive. {2}{W}{U}: Put a +1/+1 counter on Walking Archive. 1/1 |
| Eyes Everywhere | 2U | Enchantment | At the beginning of your upkeep, scry 1. {5}{U}: Exchange control of Eyes Everywhere and target nonland permanent. Activate only as a sorcery. |
| Dark Withering | 4BB | Instant | Destroy target nonblack creature. Madness {B} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.) |
| Ring of Valkas | 2 | Artifact — Equipment | Equipped creature has haste. (It can attack and {T} no matter when it came under your control.) At the beginning of your upkeep, put a +1/+1 counter on equipped creature if it's red. Equip {1} ({1}: Attach to target creature you control. Equip only as a sorcery.) |
| Organic Extinction | 8WW | Sorcery | Improvise (Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for {1}.) Destroy all nonartifact creatures. |