Alchemist's Laboratory

Alchemist's Laboratory enters the battlefield
tapped.
Whenever a player creates or sacrifices a
component, put a charge counter on Alchemist's Laboratory.
Remove 20 charge counters from Alchemist's Laboratory. Create a copy of target component
token.
Remove 50 charge counters from Alchemist's Laboratory. You may cast your next spell this
turn without paying its alternate costs.