<p>It is better than any AoE rune, yes, except in cases where the monsters you are killing are strong against physical damage and you are using a weapon without elemental damage.</p><p>The damage range of the grounshaker spell is close to the one made with Exori but you can hit more monsters at the same time, so it is a must in your spell rotation as a knight when you are killing 8 monsters or more in every pull.</p><p>You can see how much damage you can do with your skills/level using the Hits calculator from Guildstats (here is the link: <a rel="nofollow" href="https://guildstats.eu/character-hits">https://guildstats.eu/character-hits</a>) it shows the damage range of both your spells and AoE runes.</p><p></p><p>Edit: Typo</p>runes.</p>