Deathbot 3000

Whenever Deathbot 3000 is dealt noncombat damage, destroy it.
Dissolution {x}{b}{b}- When Deathbot 3000 dies,
you may exile it and pay {x}{b}{b}. If you do, each opponent loses X life.
"Through a design mistake the genius designed it with an open reactor! If we hit it there, the whole thing'll go up in a nuclear explosion! Actually it might not be a design mistake now that I think about it."