Karador, Ghost Chieftain | Izzet Chemister | Walk the Aeons

Cards

({4} magic symbol) ({U} magic symbol) ({U} magic symbol) ({R} magic symbol) available the first turn, with ({3} magic symbol) ({R} magic symbol) ({R} magic symbol) ({R} magic symbol) each extra turn available.

Cast
Walk the Aeons by paying ({4} magic symbol) ({U} magic symbol) ({U} magic symbol) , causing you to take an extra turn after this one.
Activate
Izzet Chemister's first ability by paying ({R} magic symbol) and tapping it, exiling
Walk the Aeons from your graveyard.
Move to your next turn.
Activate
Izzet Chemister's second ability by paying ({1} magic symbol) ({R} magic symbol) , tapping and sacrificing it, casting
Walk the Aeons from exile without paying its mana cost.
Resolve
Walk the Aeons, causing you to take an extra turn after this one.
Cast
Izzet Chemister from your graveyard by paying ({2} magic symbol) ({R} magic symbol) .
Repeat from step 2.