Instant speed is nice, but I think this is too slow at 5 mana. Thalia's Lancers does this right because she's a threat herself and gets all the blink / recursion shenanigans that creatures get access to.
That's a great effect, but five mana is pretty ugly. Often you want to get somewhat expensive cards, so it's unlikely you get value out of this on the turn you cast it (instant speed helps there). Honestly, although this "draws" you two of the best cards in your deck, I'd rather draw three random cards for one less mana with Harmonize.
3GG
Instant
Search your library for up to two creature cards with different names, reveal them, and put them into your hand. Then shuffle your library.
Seems moderately legit if you're playing two-creature card combos, like Kiki-Resto. Instant speed makes this really good.
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