On a Ludicolo, I would say that Leech seed, Substitute, Giga Drain, and Rain Dance with the Rain Dish ability would be a great wall. Since rain dance and leech seed will heal over time and substitute will protect Ludicolo. Giga Drain can be replaced if you want but I like it there since it restores HP.
On a Blissey, I would do Defense Curl, Reflect, Rollout, and Work Up/Tail Whip. Defence curl and Reflect boost defence while Defence Curl also Powers up rollout while work up/tail whip can boost your attack or the enemies defense.( Move tutor is needed for rollout )