Macro for announcing time left of focused banished critter needs to be all in one line:
/run for i=1,40 do local n,_,_,_,_,_,t=UnitDebuff("focus",i);if (n=="Banish") then SendChatMessage("**"..t.."** seconds left on "..UnitName("focus").."'s Banish!","EMOTE");end end

Banish macro, will focus target on cast if the previous focus is dead:
/clearfocus [button: 2]
/focus [target=focus,noexists]; [target=focus,dead]
/clearfocus [target=focus,help]
/stopcasting
/cast [target=focus,exists,harm] Banish; Banish

Left button uses healthstone, right summons healthstone, middle casts Ritual of souls:
/cast [button:1] Master Healthstone
/cast [button:2] Create Healthstone(Rank 6)
/cast [button:3] Ritual of Souls(Rank 1)

General pet attack macro:
/dismount
/petattack
/cast Intercept(Rank 3)
/cast Devour Magic

Left button use soulstone, right summon soulstone:
/cast [button:1] Master Soulstone; Create Soulstone(Rank 6)

Left mouse button focus, right mouse button clear focus:
/focus
/clearfocus [button:2]

Summon macro:
/say Summoning %t .....Please click portal
/run SendChatMessage("Summoning you now, please keep your arms and legs inside the portal at all times!", "WHISPER", "ORCISH", UnitName("target"));
/cast Ritual of Summoning

Castsequence Maco, dismounts you if your not flying and casts the next spell in line for every time you hit the button. Will reset the sequence if you change targets:
/dismount [noflying]
/castsequence reset=combat/target Siphon Life, Curse of Agony, Corruption, Immolate

Bandage, will bandage yourself if you left-click and your target for right-click:
#showtooltip
/use [button:1, target=player] Heavy Netherweave Bandage; Heavy Netherweave Bandage

Mouseover Devour Magic macro, will have your fellhunter cast devour magic on what ever your mouse cursor is hovering over:
/cast [target=mouseover] Devour Magic

Random Mount macro, left-click summons a zone appropriate mount (flying in outlands, land everywhere else), right-click summons a land mount no matter where you are. Just replace the mount names with your own:
#show
/userandom [flyable,nomounted,nobutton:2] Red Riding Nether Ray, Swift Red Windrider; [nomounted] Red Skeletal Warhorse, Horn of the Frostwolf Howler, Swift Warstrider
/dismount [noflying]