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 |
|---|---|---|---|
| Hanweir Militia Captain | 1W | Creature — Human Soldier | At the beginning of your upkeep, if you control four or more creatures, transform Hanweir Militia Captain. 2/2 |
| Forgehammer Centurion | 2R | Creature — Phyrexian Warrior | Whenever another creature or artifact you control is put into a graveyard from the battlefield, put an oil counter on Forgehammer Centurion. Whenever Forgehammer Centurion attacks, you may remove two oil counters from it. When you do, target creature can't block this turn. 3/2 |
| Sporesower Thallid | 2GG | Creature — Fungus | At the beginning of your upkeep, put a spore counter on each Fungus you control. Remove three spore counters from Sporesower Thallid: Create a 1/1 green Saproling creature token. 4/4 |
| Manifold Key | 1 | Artifact | {1}, {T}: Untap another target artifact. {3}, {T}: Target creature can't be blocked this turn. |
| Rapid Prototyper | Artifact — Contraption | Whenever you crank Rapid Prototyper, create an X/X colorless Construct artifact creature token, where X is the number of artifacts you control. | |
| Infuse | 2U | Instant | Untap target artifact, creature, or land. Draw a card at the beginning of the next turn's upkeep. |
| Capricious Efreet | 4RR | Creature — Efreet | At the beginning of your upkeep, choose target nonland permanent you control and up to two target nonland permanents you don't control. Destroy one of them at random. 6/4 |
| Mesmeric Glare | 2U | Instant — Adventure | Counter target spell with mana value 3 or less. (Then exile this card. You may cast the creature later from exile.) |
| Minor Misstep | U | Instant | Counter target spell with mana value 1 or less. |
| Thoughtbind | 2U | Instant | Counter target spell with mana value 4 or less. |