Say no and the shop works exactly the same
Instead, it only gains flying when you lose life during the turn (and gains vigilance too)
For six ink, or five if you Shift him, you not only get a particularly durable character on the board, but a card search
Living Death is always really fun to resolve, and its a boardwipe thats increasingly easy to make one-sided
Removing artifacts can help support a commander like Ich-Tekik, Salvage Splicer, or trigger a card like Fangren Marauder
For your first few drafts, just take the card that looks the most interesting and powerful to you and don't kill yourself over the details (that part comes later in your drafting career)