Revives you once after death.
Reduces your Max HP by 30% (Devil Tax).
Can only be recieved by the devil
There is no invincibility when reviving from the extra life', Does not use up your revive.
When you exclude reviving, Extra Life provides you with 40% more HP overall. However if you choose to revive, Extra Life only provides you with a 5% increase overall in HP compared to if you didn't accept the deal from the Devil