Oath of Fëanor

If Fëanor, Oathbound Slayer is your commander and this card is in your starting hand you may begin the game with this on the battlefield

When you cast this spell you may sacrifice any number of creatures, if you do, put a trample counter and a number of +1/+1 counters equal to the cumulative toughness of the sacrificed creatures on your commander

Whenever an enemy commander is returned to the command zone, draw a card and deal 2 damage to that opponent