the power nine mtg cards Fanatics Collect A Love Letter to the
Description
Don't have a sidekick to bring with you
You might not run them, but there are so many good spells available in Cube, you can make a couple of speculative picks with high upside and be fine when they don't pan out
In fact, in Legacy, I board it in against both Death and Taxes and Jeskai Control even though neither deck really interacts with their graveyard, simply for the previously mentioned reasons
Its a 3-drop that asks you to empty your library and draw from it to win instead of losing
Omega Myr I survived a Memnite attack once
Reflector Mage
