you can't cast it without exiling a creature card, and you can't exile additional creature cards
The Japanese name of "Slifer the Sky Dragon", "The Sky Dragon of Osiris", is named after Osiris, the Egyptian god of life, death, and fertility, represents the polarity of good and evil, and is regarded as the "god of the sky"
Theres one class of slippery characters that excels at going unnoticed until their goals are met: the deadly clan of assassins
During the Battle Phase (Quick Effect): You can destroy cards on the field up to the number of co-linked monsters on the field
You can also run it fairly, as a commander that provides both a mana advantage and card advantage since it effectively copies your instants and sorceries and gives you a discount
Id prefer it if the game just put a price tag on packs