Wide Vessel, Token of Sleep

Wide Vessel, Token of Sleep enters the battlefield with 6 Summoning counters on it.
Whenever you cast a spell, you may remove a Summoning counter from Wide Vessel, Token of Sleep. If you do, destroy Wide Vessel, Token of Sleep, then select 6 different creatures on the battlefield. They gain this ability and 6 Summoning counters, but substitute "Wide Vessel, Token of Sleep" for the name of the creature. If a player chooses not to remove a Summoning counter off of a creature they own on their turn, they lo