God-Eternal Kefnet + Scroll Rack + Nexus of Fate

God-Eternal Kefnet

Scroll Rack

Nexus of Fate

How it works

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