It doesn't matter what happened to the spells you cast
Illustrated by Filip Burburan Standard Not Legal Alchemy Not Legal Pioneer Not Legal Historic Legal Modern Legal Brawl Legal Legacy Legal Comp
As an inflatable Wall, it's a great card to interfere with creatures and to put the fear of a powerful blocker in them
So far, this restriction has limited the play of Coax from the Blind Eternities to Standard, and even in Standard it has been fairly fringe
Those effects are particularly good for this deck's stun and shield counters, keeping opposing creatures locked down and your own creatures safe, as well as for blitzing through the strong effects of your saga creatures
Its extremely interesting to me that two experienced players of a highly linear deck can have such differing opinions on it, but that is a topic for another article