Chum, The Detonator

Ward {5}

Infinity —During your turn, prevent all damage that would be dealt to Chum and it can't be the target of spells or abilities your opponents control.

Go Chomper! —{2}{u}{b}{r}: Exile target creature.
It's controller loses life equal to it's mana value. Players can't cast spells or activate abilities in response to this ability.