Helm of the Host attached to Aberrant Mind Sorcerer.
({8} magic symbol) ({U} magic symbol) ({U} magic symbol) each other turn available.
Steps
Cast Time Stretch by paying ({8} magic symbol) ({U} magic symbol) ({U} magic symbol) , causing you to take two extra turns after this one.
At the beginning of your combat phase, Helm of the Host triggers, creating a token copy of Aberrant Mind Sorcerer with haste.
When the Aberrant Mind Sorcerer token enters the battlefield, it triggers, causing you to roll a d20 and either return Time Stretch from your graveyard to your hand, or put Time Stretch from your graveyard on top of your library.
Move to your first extra turn, drawing Time Stretch if it was put on top of your library.