Alania, Divergent Storm, and Twincast

Prerequisites

• Alania, Divergent Storm on the battlefield
• Twincast in hand
• You have not cast an instant or sorcery spell this turn
• You have a sorcery card in hand
• plus enough mana to cast the additional sorcery available

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 Twincast by paying [cost], targeting the additional sorcery
4. Alania triggers, causing an opponent to draw a card and you to copy Twincast, with the copy targeting the original Twincast
5. Resolve the copy of Twincast, copying the original Twincast, with the copy targeting the original Twincast
6. Repeat step 5

Results

• Infinite magecraft triggers