Any of the three options on Aether Channeler are fine, and youll get good benefits by playing this card in a blink deck
Theres no real weaknesses to this deck, but you can make it better by changing some cards that dont really belong here
Until we see more, it really is a matter of asking yourself whether you see enough 'real' cards to be happy with this set, as well as keeping an eye on the box EV to see how far below MSRP it falls
Whenever a creature you control becomes blocked, you may exile it
You might expect a creatures-only restriction here, given the lore, but abilities from artifacts, enchantments, and planeswalkers are fair game too
Paranormal Analyst and Threats Around Every Corner both add benefits to the mechanic , giving you draw and ramp along with your creature