The Golden Throne

Partner with The Emperor
Enchanted creature has base power and
toughness 0/1, indestructible, and "you may play humans from your library without paying their
mana costs (if you do, shuffle your library)."
When The Golden throne is attached it has
"at the beginning of your upkeep sacrifice 5 creatures or destroy The Golden Throne" and
"if The Golden Throne is destroyed, exile
enchanted creature."