The Last Sliver

Omnicolor (If this card is your commander it's
color identity is the same a your library)
Chose a creature type. All creatures you control
of the chosen type are slivers in addition to their
other types.
Sliver creatures you control have "Your slivers
have all abilities of slivers you control."
"First there was light, and last there was slivers"
—The Christian God