Its host was unconscious of the change confided in it. For some time the little rider had slumbered and waited for nascence. It had expanded considerably but still it didn't show externally nor had the host any symptoms to speak of.

It shattered its hull and started to cling its hungry tendrils about feasting on the moisture of the host, shivering with anticipation. Host was ancient, almost beyond reckoning, but robust and vigorous. 

It would feed out of that reservoir of potency and thrive.

Finally wriggling through the skin it spread its stipules, spines and shoots. Waiting for rain.

Ok, First one done. I'll challenge with the following title: "The Raven and the Rabbit."