Felnaak, Nous Scourge

Felnaak, Nous Scourge may attack its controller.
Whenever Felnaak deals damage to a player, each of that player's opponents each draw X cards, then discard X cards, where X is its power.
Dominance — As long as Felnaak has the highest power among creatures on the battlefield, it has double strike and "Damage Felnaak deals to its controller does not count as commander damage."