God-Eternal Kefnet + Scroll Rack + Walk the Aeons

God-Eternal Kefnet

Scroll Rack

Walk the Aeons

How it works

1. Tap Scroll Rack and pay 1 to activate it, putting Walk the Aeons on top of your library.
2. Pass the turn.
3. On your next draw step, when you draw Walk the Aeons, reveal it due to Kefnet's ability, making a copy that costs 2 less to cast.
4. Cast the copy for 2, granting you an extra turn.