While a very efficient tutor for the mana cost, sacrificing a creature was a pretty big ask when the Commander format was slower, running more akin to a battlecruiser environment full of big creatures slugging it out than the much more intricate version we play today
It deals 4 damage to that creature instead if this spells additional cost was paid
Creature - Goblin Warrior Color tag templates(None) Beledros Witherbloom Flying At the beginning of each upkeep, create a 1/1 black and green Pest creature token with "When this token dies, you gain 1 life." Pay 10 life: Untap all lands you control
However, the secondary market tells a different story
I wish I could give you an easy answer about when to kill your opponents heroic creatures, but if such an easy answer existed, I would not have had to devote an entire article to the topic
Pattern of Rebirth Pattern of Rebirth is one of the best ways to tutor creatures straight to the field, and doubly so in a deck with lots of free sacrifice outlets