You can sacrifice creatures and artifacts interchangeably. (If an effect asks you to sacrifice one of them, you can sacrifice either.) {1}, {T}, Sacrifice another artifact or creature: Put a rebuilding counter on Slobad. {T}, Remove 3 Rebuilding Counters from Slobad: Create a token that's a copy of Bosh, Iron Golem.
Near Mint - $39,600
Lightly Played - $31,700
Moderately Played - $27,800
Heavily Played - $23,800
Damaged - $19,800
Near Mint Spanish - $39,600
Lightly Played Spanish - $31,700
Moderately Played Spanish - $27,800
Heavily Played Spanish - $23,800
Damaged Spanish - $19,800