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And your options are pretty good: Make some extra bodies, draw cards, or sling around some damage
DON'T counter ramp cards (Kodama's Reach), single-use tutors (Demonic Tutor), random fatty creatures that don't have a threatening enter-the-battlefield trigger and can't attack through your drakes (Wurmcoil Engine), or anything you can deal with using a bounce spell already in your hand DO counter fatties that can't be chumped blocked by drakes (Blightsteel Colossus) if you don't have creature removal in hand, cards that make future counter magic a pain to cast (Hall of Gemstone), anything that generates excessive amounts of card advantage (Greater Good), or any card that you know has a tendency to win games in short order (Prophet of Kruphix)
Creatures (20) 4 White Knight 2 Serra Angel 4 Order of the White Shield 4 Savannah Lions 2 Phyrexian War Beast 4 Order of Leitbur Lands (24) Spells (16) Tom Chanphengs white aggro deck was an unlikely dark horse in a sea of Necropotence decks as far as the eye could see
At worst you'll just sacrifice the goblins you just made, whereas opponents will likely be losing real creatures