({6} magic symbol) ({U} magic symbol) each turn available.
Steps
Activate
Cormela by paying ({1} magic symbol) and tapping it, adding ({U} magic symbol) ({B} magic symbol) ({R} magic symbol) that can only be spent to cast instant or sorcery spells.
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.
Cast
Saw in Half by paying ({2} magic symbol) ({B} magic symbol) , destroying
Cormela and creating two token copies of it with base power equal to half the destroyed creature's power and base toughness equal to half the destroyed creature's toughness, rounding up each time.
Put one
Cormela token into your graveyard due to the legend rule.
When the original
Cormela and the token
Cormela die, their abilities trigger, returning
Walk the Aeons and
Saw in Half from your graveyard to your hand.
Repeat each turn.
Results
Infinite turns.
Metadata
This combo produces a lock.
In 14 decks according to EDHREC.
Bracket Tag
This combo has been estimated to be Ruthless (Bracket 4+).