God-Eternal Kefnet + Scroll Rack + Part the Waterveil

God-Eternal Kefnet

Scroll Rack

Part the Waterveil

How it works

1. Tap Scroll Rack and pay 1 to activate it, putting Part the Waterveil on top of your library.
2. Pass the turn.
3. On your next draw step, when you draw Part the Waterveil, 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.