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 |
|---|---|---|---|
| Desert Twister | 4GG | Sorcery | Destroy target permanent. |
| Vindicate | 1WB | Sorcery | Destroy target permanent. |
| Feedback Bolt | 4R | Instant | Feedback Bolt deals damage to target player or planeswalker equal to the number of artifacts you control. |
| Rally the Ancestors | XWW | Instant | Return each creature card with mana value X or less from your graveyard to the battlefield. Exile those creatures at the beginning of your next upkeep. Exile Rally the Ancestors. |
| Go for the Throat | 1B | Instant | Destroy target nonartifact creature. |
| Phyrexian Reaper | 4B | Creature — Phyrexian Zombie | Whenever Phyrexian Reaper becomes blocked by a green creature, destroy that creature. It can't be regenerated. 3/3 |
| The Conundrum of Bowls | 2UU | Enchantment — Saga | (As this Saga enters and after your draw step add a lore counter. Sacrifice after III.) I — Seek a card with mana value less than the number of cards in your hand. II — Seek a card with mana value greater than the number of cards in your hand. III — Count the number of cards in your hand. You may cast a spell with mana value equal to that number from your hand without paying its mana cost. |
| Ulvenwald Primordials | Creature — Werewolf | {G}: Regenerate Ulvenwald Primordials. At the beginning of each upkeep, if a player cast two or more spells last turn, transform Ulvenwald Primordials. 5/5 | |
| Whirler Rogue | 2UU | Creature — Human Rogue Artificer | When Whirler Rogue enters the battlefield, create two 1/1 colorless Thopter artifact creature tokens with flying. Tap two untapped artifacts you control: Target creature can't be blocked this turn. 2/2 |
| Primordial Hydra | XGG | Creature — Hydra | Primordial Hydra enters the battlefield with X +1/+1 counters on it. At the beginning of your upkeep, double the number of +1/+1 counters on Primordial Hydra. Primordial Hydra has trample as long as it has ten or more +1/+1 counters on it. 0/0 |