Primal Vigor [Commander 2013] Magic Player Rewards 2009 you may put a Goblin

you may put a Goblin permanent card from your hand onto the battlefield

and it has "{2}{U}{U}: Return this creature to its owner's hand at the beginning of the next end step

you may have Valakut

sacrifice The Gitrog Monster unless you sacrifice a land

Set: Friday Night Magic 2007 Type: Sorcery Rarity: Rare Cost: {6}{G} Create a 6/6 green Wurm creature token

Primal Vigor [Commander 2013] Magic Player Rewards 2009 you may put a GoblinSet: Commander 2013 Type: Enchantment Rarity: Rare Cost: {4}{G} If one or more tokens would be created, twice that many of those tokens are created instead. If one or more +1 +1 counters would be put on a creature, twice that many +1 +1 counters are put on that creature instead.