Defense of the Heart, Natural Order, Elvish Piper, or Quicksilver Amulet are all good options for cheating something into play.

you could also take the reanimator approach by filling your graveyard up with cards like Buried Alive or Entomb, or discard outlets like Fauna Shaman/Survival of the Fittest or even something like Insidious Dreams, then bringing them onto the battlefield with cards like Reanimate, Exhume, Living Death, or maybe even a Sheoldred, Whispering One/Reya Dawnbringer to get something every turn.

Defense and Piper I'm going to look into getting Quicksilver while filling in that 4 slot on paper in reality alot of my dragons fit in at 4 mana with ur dragon at the helm. As for reanimator strat I'd just rather play my boyfriends Meren deck