What it does
"Sigil of Corruption" isn't a standard keyword ability—it sounds like a specific card name rather than an evergreen or mechanic. If you're thinking of the creature Sigil of Corruption, it's a Phyrexian Horror whose power and toughness equal the number of artifacts and creatures you control, making it a scalable beater that grows in go-wide or artifact-heavy decks.
The nuance people miss: its stats are defined by a characteristic-defining ability, so it's continuously recalculated. If your board gets wiped, it can shrink to 0/0 and die as a state-based action, even outside combat. Counting both artifacts and creatures means artifact creatures effectively count once for each type they qualify under.
In Commander, it shines in token swarms or artifact decks (think Urza or treasure-heavy builds), but it's fragile to board wipes and bounce, so protect your wider board to keep it threatening.
Iconic cards with Sigil of Corruption
See all 1 →