Crovax the Cursed
Stronghold — rare
Legendary Creature — Vampire Noble
Crovax the Cursed rulings:
2004-10-04: Crovax can sacrifice itself to its upkeep triggered ability.
2004-10-04: You can only sacrifice one creature to it each turn.
2004-10-04: If you choose not to sacrifice a creature and he has no +1/+1 counters, then nothing bad happens. Note that some other effect must be keeping him alive if he has no counters.