Combustion Man

Reach
When Combustion Man enters the battlefield or becomes the target of a spell an opponent
controls, Combustion Man deals 3 damage to
any target.
Whenever Combustion Man is dealt damage by
an activated ability of an artifact or an equipped
creature, flip a coin. If it comes up heads,
sacrifice Combustion Man.
"What do you guys think of ... Sparky Sparky Boom
Man! Just think about it." — Sokka