The way challenging works is a ready (untapped) character exerts and chooses an opposing exerted character to challenge, and then both cards compare their strength (attack) and willpower (defense) values to each other (meaning the attacker automatically gets hit back by the defender)
They have that feel we got from Magic in its earliest days
The parallel foils are nice, and Im excited to see the alternate art, but thats what youd expect from a reprint set
It could be that this enchantment requires too much work in the long run, but Im very willing to try it out, and it even looks really fun for a Constructed deck, too
Not Dead, Just Asleep: A non-"lethal" variation of this trope appears in the quarterfinals of the Alola League
This is where self-storage comes into play