You have Théoden, King of Rohan but need support.
Look for Rally at the Hornburg or Protector of Gondor.
Humans ready to attack. A creature without haste cannot attack the turn it enters. Casting a Human after combat wastes a double-strike bonus unless you need it for another reason.
You already have Théoden, King of Rohan.
Consider Rally at the Hornburg if it fills a useful job.
Rally makes two hasty Humans, triggering Théoden twice. Give double strike to two different attackers before combat; giving it twice to one creature does not stack.
The support is missing
Take castable creatures and answers. If the engine never arrives, use the good cards rather than forcing narrow support.