There is NO "Auto" spells or abilities in game, maybe probably the talent ones if you count "auto" as getting them without paying.
But anyway, Ritual of Doom is only obtainable after doing a pretty boring quest tha involves blasted lands, its pretty useless since the mob breaks really fast and a felguard is probably better than it, besides you getting all the bonuses and SL and stuff if you are demo.
Soulwell comes from Ritrual of Souls, a level 68 spell that can be bought from a trainer a soon as you hit 68, it requires one soul shard, and 2 other members to channel the spell, once its done you and your party members are gonna see a pretty soulwell, that all of you can click to get a master healthstone, 10 charges or 3 minutes total, 5 min cooldown. Pretty much = If you need a master healthstone, or ANYONE in your party/raid does, and this is not on cooldown, use this instead of making individual healthstones, since you will waste 1 soul shard, not 20.