Note that, like all CA's in the Malevolent Champion aspect, casting speed is determined by weapon speed, and can be boosted by weapon lore skills and +% attack speed. Likewise, the casting speed will be penalized by wielding a weapon with too high a level.
Pros and Cons
Useful in both multiplayer and single player.
Boosts the Shadow's Warrior's powers and those of his summons.
No way to decrease the Cooldown.
Without taking the Ensign modification, must stay very close to the flag to benefit from its effects.
Tutor has no effect if the player is equipped with experience per kill items or using mentor potions.
This CA will boost the stats of the caster even if they are playing solo.