Each player has an opportunity to cast an instant spell (or activate an activated ability) in response to any spell or ability that goes on the stack
Sure, Un-sets are a fun time and a great Draft experience, but if you cant really play them outside of Draft, how many people will care
Why We Tune Tuning a deck is like tuning an instrument (Im pretty sure were borrowing musical terminology on this one)
Enchantress payoffs like Hallowed Haunting, Nylea's Colossus, and Setessan Champion lend themselves well to an aggressive shell with this Selesnya commander at the helm
I will say this, though: it's awfully Golgari
No matter how you manage to get it onto the battlefield, the raw card advantage and board presence that it represents is somewhat unmatched among other big creatures