Creature - Phyrexian Horror (Uncommon) Corrupted — When Ravenous Necrotitan enters the battlefield, sacrifice a creature unless an oppoentn has three or more poison counters. Some of Sheoldred's goliaths spread the glory of Phyrexia. Others just eat a lot.
Here's a corrupted card where the corrupted clause gets around a downside. Note that there may be some caes where you do want that downside.