The only thing holding it back is average game length
But, not many people are playing Sengir, the Dark Baron, and Rograkh, Son of Rohgahh
There are so many one-mana spells (or two-mana spells) that do this effect, plus let you have more agency over future turns, that casting either of these two spells is essentially throwing away a card
Calamity, Galloping Inferno I thought Calamity, Galloping Inferno looked fine
This can be used to ramp or enable combos that require sacrificing goblins for various effects, like Squee, the Immortals self-reanimation
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