Long time ago, When i played my rogue and mage, I used combat medic/ lifegiver in PVE, I was blamed for wasting a skill slot to deal damage. Then, they asked me to use pots instead.
But I see horn of renew is a must-have skill for every warrior in game/ forum.
Sorry for ignorant. Why dont they use pots to replace horn of renew? Even without invulnerability from HoR, a warrior can still survive from the attack of boss. You can taunt with other skills(windmill, CS ,AX,jugg). Is this skill really that important?