Pitiless Plunderer Pitiless Plunderer can do serious work in a Sacrifice deck, generating tons of mana while your other creatures are sacrificed for value
If things are looking rough and a knockout is incoming, just discard all its energy and take a free Prize card instead
Whenever one or more creatures you control deal combat damage to a player, look at the top card of that player's library, then exile it face down
For only two Red mana, this little Goblin Rogue allows you to cast Goblin spells from the top of your library
If there is a monster(s) among the excavated cards: You can send all excavated monsters to the Graveyard, then add the rest of the cards to your hand
(It attacks each combat if able and attacks a player other than you if able.) Whenever enchanted creature attacks, defending player gets two rad counters