Youll want to include cards like Heroic Intervention and Nissa, Who Shakes the World that can keep your land creatures safe because a board wipe can be extra devastating when your lands are also creatures
(This effect lasts indefinitely.) Illustrated by Greg Staples Standard Not Legal Alchemy Not Legal Pioneer Not Legal Historic Not Legal Modern Not Legal Brawl Not Legal Legacy Legal Comp
If you drop this onto an even meager board and then cast Ghostly Flicker, Ephemerate, or something similar on it, you could produce a massive aerial attack out of nowhere
Until end of turn, all damage that would be dealt to you and creatures you control is dealt to the chosen creature instead (if it's still on the battlefield)
The only thing that you can safely trade for in bulk are commons/uncommons for decks (Yanma, Magnemite, Phanpy, etc), or average Trainer cards like Switch, Energy Retrieval, etc