Besides creatures that make more creatures, ideal reanimation targets are creatures that have a big impact the moment they hit the battlefield, so that even an opponent holding Swords to Plowshares with available will have a hard time recovering from your unfairness
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The opposite is also true: the better the individual creatures are, the weaker the tribal rewards need to be to convince you to play a lot of them
deals damage equal to that card's converted mana cost to that player or planeswalker, then you put the revealed cards on the bottom of your library in any order
So while this may not necessarily be the best goblin-tribal commander its still a fairly relevant spells-based one
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