Artoria, The Corrupted King

Lifeline
At the beginning of your upkeep, you may sacrifice another creature. If you do, put a +1/+1 counter on Artoria, The Corrupted king, and draw a card
{4}{w}{b}, Exile a creature you control: Artoria, The Corrupted king deals damage equal to its power to each opponent. You gain life equal to the total damage dealt this way.
(Activate only as a sorcery.)