Something similar to sun titan, when enters return something from graveyard. i know that some blue returns an instant/sorcery when enters.

@FredyTang I believe you're thinking of Snapcaster Mage which gives a card in your graveyard flashback until end of turn. That would be extremely useful in this deck

I was considering Snapcaster Mage for this deck, but until I win the lottery I think I'll hold off on it for now ;D

well I've always liked Augur of Bolas for getting instant/sorcery from your deck, that could play in well if you wanted to keep your hand full of them. otherwise I know Mnemonic Wall allows you to return them from the graveyard, but I tend to find the CMC a little too high.

Cloudshift over Flicker .