None of that's actually needed if you have auto-self cast enabled. Because.. well.. if you're targeting a friendly player, the heal gets cast on them. If you're targeting an enemy or yourself or nothing, its cast on you.
/castsequence reset=15 Nature's Swiftness, Healing Touch
That's my macro for arenas. For pve I take out the reset=15. The logic behind this is the only time you are EVER casting HT in arena is in conjunction with nature's swiftness. So that's all this macro allows you to do. So smack this macro twice (not hard to do.. everyone here is a key spammer anyways) and you get your nice big 5.5k heal.
The reason to use this macro over the above, is fairly simple. If you mash it once, you have NS up for another spell without using it on HT. Sometimes an NS-Roots when grasp is on cooldown, or an NS-Cyclone or Wrath NS-Wrath are more beneficial to you than just a big heal. I've won a lot of games with feral charge-bash wrath ns-wrath on a healer who is low while my warrior is CC'd. Whenever a melee has their trinket down (you have to be sure of this, or you die.) and you're low with no other outs, NS-Cyclone gives you six seconds to get away, let MS fade and heal yourself up out of line of sight. Much more beneficial than a 2.5k heal that they'll just chew through with another MS-Whirlwind then mace stun.
My advice to the OP is this. Either find a warrior, or perhaps more immediately, stay out of line of sight as much as possible. Your shammy has 11k+ health, he's not going anywhere fast in the 1300's. Hop out, lifebloom lifebloom, run around to the other side of the pillar, rejuv lifebloom, chill behind the pillar again. If a warrior is running towards you, you can bet your life he's lining up for an intercept. So do the only thing humanly possible.. bear form and run towards him spamming charge >:D You'll trade places and he's rooted for four seconds, tons of time to get roots off on him and go behind a different pillar, refreshing hots on the sham as you go. Be sure to faerie fire clothies (for the -armor) and rogues/druids/night elves so they can't get easy stealths off.
Edited, Aug 5th 2008 9:02am by Banatu