At least if it was a Link Monster that didn't have to be put in the main
Each of these doubles something for you - be it damage, tokens generated, proliferate triggers, dying triggers or even just the power of your creatures - and each of them can also become indestructible by sacrificing something else
Crescendo encourages aggression and is better suited to a Ruhan deck than a Zedruu deck, while Flusterstorm offers nice defense against combo-minded Commander opponents who want to kill the table with the Storm mechanica satisfying, hero-making table-save from Brain Freeze
At the cost of not being able to conduct your Battle Phase, you can Special Summon one level four Monster from your hand
As a token producer this is about as slow as it comes but it does have the upside of being a fairly significant threat
Too bad the Farewell style exile wipes are increasing