Biovisionary | Storm King's Thunder | Croaking Counterpart

Cards

({3} magic symbol) ({G} magic symbol) ({U} magic symbol) ({R} magic symbol) ({R} magic symbol) ({R} magic symbol) available.

Cast
Storm King's Thunder by paying ({2} magic symbol) ({R} magic symbol) ({R} magic symbol) ({R} magic symbol) , copying the next instant or sorcery spell you cast twice.
Cast
Croaking Counterpart by paying ({1} magic symbol) ({G} magic symbol) ({U} magic symbol) , targeting
Biovisionary.
Storm King's Thunder triggers, copying
Croaking Counterpart twice, with both copies targeting
Biovisionary.
Resolve all
Croaking Counterparts, creating three token copies of
Biovisionary that are 1/1 Frogs.
At the beginning of your end step, each
Biovisionary triggers.
Resolve the first trigger, causing you to win the game.