Extravagant Replication | Ardent Elementalist | Walk the Aeons

Cards

Cast
Walk the Aeons by paying its mana cost, causing you to take an extra turn after this one.
Move to your next turn.
At the beginning of your upkeep,
Extravagant Replication triggers, creating a token copy of
Ardent Elementalist.
When the
Ardent Elementalist token enters the battlefield, it triggers, returning
Walk the Aeons from your graveyard to your hand.
Repeat.