Requires

Alania, Divergent Storm must be on the battlefield. Insidious Will must be in hand. You have not cast an instant or sorcery spell this turn. You have a sorcery card in hand. Mana needed: plus enough mana to cast the additional sorcery

Steps

1. Cast the additional sorcery by paying its mana cost.
2. Alania triggers; choose not to have an opponent draw a card.
3. Holding priority, cast Insidious Will by paying , targeting the additional sorcery.
4. Alania triggers, causing an opponent to draw a card and you to copy Insidious Will, with the copy targeting the original Insidious Will.
5. Resolve the copy of Insidious Will, copying the original Insidious Will, with the copy targeting the original Insidious Will.
6. Repeat step 5.

Results