Thrumming Stone | Hinder | Swarm Intelligence

Cards

Cast any other spell, or wait for an opponent to cast one.
Cast
Hinder by paying ({1} magic symbol) ({U} magic symbol) ({U} magic symbol) , targeting that spell.
Swarm Intelligence and
Thrumming Stone trigger.
Resolve the
Swarm Intelligence trigger, creating a copy of
Hinder, targeting the original
Hinder.
Resolve the copy of
Hinder, countering the original
Hinder and putting it on top of your library.
Resolve the
Thrumming Stone trigger from step 3, revealing the top four cards of your library and casting
Hinder without paying its mana cost.
Repeat from step 3.