This card is for one specific archetype: a Leadership deck, fronted by a Guardian, with many Guardian allies (or any allies, for Peter Quill), and also full of upgrades to put on those allies. In that deck, this will draw you a bajillion cards. Otherwise, it does pretty much nothing.
Frustratingly, most (all?) of the Guardian heroes are only guardians on their hero side, meaning this will turn off while you're in alterego form. You can usually play around that, but if you wanted to try sitting in alterego for an extended period, you're not going to be drawing extra cards. Boo.