You do get one attack and one card out of it, so Summon: Leviathan represents a lot of tempo and advantage
It's printed on a thicker cardstock and is not a tournament-legal Magic card, but it still allows you to show off your commander and carry it inside the deck box
My approach to work might seem a bit confusing to people, especially in the light of so many classes being available right now that tell us in detail how to layer out work evenly and be able to have it look good at any point
Are you running them as synergy pieces, or generic card draw engines
Break Down the Door Like most modal instants, Break Down the Door is overcosted for any of its individual modes
And you can even gain some of that life back with cards like Glowing OneGlowing One and Lily Bowen, Raging GrandmaLily Bowen, Raging Grandma