Shadowstep then Ambush or Garrote

This macro will cast Shadowstep followed by Ambush if dagger is equipped or Garrote otherwise.

/castsequence reset=target/stealth [equipped:daggers] Shdowstep, [equipped:daggers] Ambush; [noequipped:daggers] Shadowstep, [noequipped:daggers] Garrote

Shadowstep then Sap

This macro will cast Shadowstep followed by Sap.

/castsequence reset=20 Shadowstep, Sap

Premeditation, Shadowstep then Ambush or Backstab

This macro will cast Premeditation, Shadowstep followed by Ambush if stealthed or Backstab if not stealthed.

/cast Premeditation 
/stopcasting 
/cast Shadowstep 
/stopcasting 
/cast [stealth] Ambush; Backstab

Ambush or Backstab

This macro will cast Ambush when stealthed or Backstab if not.

/cast [stealth] Ambush; Backstab 
/cast [nostealth] Backstab; Ambush

Sinister Strike or Eviscerate

This macro will cast Sinister Strike when left-clicked or Eviscerate when right-clicked.

/cast [button:2] Eviscerate; Sinister Strike

Sinister Strike or Riposte

This macro will cast Sinister Strike when left-clicked or Riposte when right-clicked.

/cast [button:2] Riposte; Sinister Strike

Premeditation/Ambush Combo or Cold Blood/Eviscerate Combo

This macro will cast Premeditation and Ambush when left-clicked or Coldblood and Eviscerate when right-clicked.

/cast [button:2] Cold Blood; Premeditation 
/stopcasting 
/cast [button:2] Eviscerate; Ambush

Cold Blood then Mutilate

This macro will cast Cold Blood followed by Mutilate.

/cast Cold Blood 
/stopcasting 
/cast Mutilate

Premeditation and Cheap Shot

This macro will cast Premeditation and Cheap Shot in one-click.

/cast Premeditation 
/stopcasting 
/cast Cheap Shot

Premeditation, Shadowstep and Cheap Shot

This macro will cast Premeditation, Shadowstep and Cheap Shot.

/cast Premeditation 
/stopcasting
cast Shadowstep 
/stopcasting
/cast Cheap Shot

Vanish, Shadowstep and Cheap Shot

This macro will cast Vanish, Shadowstep and Cheap Shot.

/castsequence Vanish, Premeditation, Cheap Shot

Thistle Tea, Cold Blood and Eviscerate

This macro will drink your Thistle Tea, then cast Cold Blood and Eviscerate.

/use Thistle Tea 
/castsequence reset=180 Cold Blood, Eviscerate 

Multi-Player Blind

This macro will cast Blind on your hostile mouseover target or your current target.

/cast [target=mouseover,exists,harm,nodead][harm,nodead] Blind

One-Button Stun

This macro will cast Cheap Shot while stealthed or Gouge while unstealthed.

/cast [stealth] Cheap Shot; Kidney Shot