That makes week 1 a genuinely good time to buy Amethyst pieces if you've done the research on what the archetype needs
Costing six and not being able to immediately gain any life means you will have to do quite a lot of work just to get to stage you can make the Wurmcoil with any semblance of safety, if at all
You have a ton of useful abilities, such as protection from virtually every color, Deathtouch, Lifelink, First Strikeand, of course, most of them fly
While Sarkhan has pretty lousy alternate abilities, Chandras +1 abilities let you pick off smaller creatures or dig towards extra action, both of which are useful at different points in the game
Remember that golden rule: Prototype is irrelevant if you arent casting the card and it's not on the battlefield
Having a solid amount of removal helps clear any blockers away as well as fueling both Delve and Delirium