Sir Winston Churchill

Affinity for Humans (This spell costs {1} to play
for each human you control)
When Churchill enters the battlefield, create
three 0/3 colorless Thopter artifact creature token
with flying and "{5}, {t}, Sacrifice this token, create a
1/5th Nuclear weapon artifact token with
"{t}, sacrifice five 1/5th Nuclear weapon tokens, target
player loses 50 life."