You can also slowly grow your goblin population by sacrificing one to make two more
The anthem effect is nice, but the ability to shut down decks that like to steal creatures is arguably more useful in many playgroups
So, you shuffle all the cards back into your library, you draw a new 7, and then you put a number of cards from your hand on the bottom of your library once you decide to keep the hand
8 Ziatora, The Incinerator Ziatora, The Incinerator is a fantastic Sacrifice commander if you want to play creatures with high power
This means that with enough lands in one's deck this card can chain its ability several times, allowing a player to dump an absurd number of lands onto the battlefield
Skirmish Rhino(the original design of Siege Rhino, btw) is a bulky uncommon that can power through in the early game and has an enters-trigger that is more impactful in multiples